Legg Mason Partners Investment Funds NCSR Certified annual shareholder report (management investment company)

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-3275

Legg Mason Partners Investment Funds, Inc.

(Exact name of registrant as specified in charter)

125 Broad Street, New York, NY 10004
(Address of principal executive offices) (Zip code)

Robert I. Frenkel, Esq.
Legg Mason & Co., LLC
300 First Stamford Place, 4^th Floor
Stamford, CT 06902
(Name and address of agent for service)

Registrant’s telephone number, including area code: (800) 451-2010

Date of fiscal year end: April 30

Date of reporting period: October 31, 2006

ITEM 1. REPORT TO STOCKHOLDERS.

The Semi-Annual Report to Stockholders is filed herewith.



SEMI-ANNUAL REPORT OCTOBER 31, 2006		Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value



		INVESTMENT PRODUCTS: NOT FDIC INSURED•NO BANK GUARANTEE•MAY LOSE VALUE


	Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value

Semi-Annual Report • October 31, 2006

What’s

Inside


Fund Objective

The Fund seeks long-term capital growth.


Letter from the Chairman		I
Fund at a Glance		1
Fund Expenses		2
Schedule of Investments		4
Statement of Assets and Liabilities		9
Statement of Operations		10
Statements of Changes in Net Assets		11
Financial Highlights		12
Notes to Financial Statements		15
Board Approval of Management and Subadvisory Agreements		25
Additional Shareholder Information		27


	Letter from the Chairman

R. JAY GERKEN, CFA

Chairman, President and
Chief Executive Officer


	Dear Shareholder,

	The U.S. economy took a step backwards and weakened considerably during the six-month reporting period. After gross domestic product (“GDP”)ⁱ increased a modest 1.7% in the last three months of 2005, the economy rebounded sharply in the first quarter of 2006. During this time, GDP rose 5.6%, its highest reading since the third quarter of 2003. In the second quarter, GDP growth was 2.6%, according to the U.S. Commerce Department. The preliminary estimate for third quarter GDP growth was 2.2%.


	After increasing the federal funds rateⁱⁱ to 5.25% in June — its 17^th consecutive rate hike — the Federal Reserve Board (“Fed”)ⁱⁱⁱ paused from raising rates at its next four meetings. In its statement accompanying the December meeting, the Fed stated, “Economic growth has slowed over the course of the year, partly reflecting a substantial cooling of the housing market. Although recent indicators have been mixed, the economy seems likely to expand at a moderate pace on balance over coming quarters.” The Fed’s next meeting is at the end of January, and we believe any further rate movements will likely be data dependent.
	The U.S. stock market was weak during the first half of the reporting period. Despite continued strong corporate profits, uncertainty regarding the Fed and record high oil prices dampened investor sentiment. However, given the Fed’s three rate pauses and a sharp decline in oil prices, the market rallied sharply over the second half of the period. All told, the S&P 500 Index^iv returned 6.10% during the six months ended October 31, 2006.
	Looking at the market more closely, large-cap stocks outperformed their mid-and small-cap counterparts, with the Russell 1000^v, Russell Midcap^vi and Russell 2000^vii Indexes returning 5.55%, 2.68%, and 0.90%, respectively. With the

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value I


	potential for a slowing economy, investors were drawn to more defensive, large-cap companies. From an investment style perspective, value stocks outperformed growth stocks, with the Russell 3000 Value^viii and Russell 3000 Growth^ix Indexes returning 7.33% and 2.95%, respectively.

	Performance Review


	For the six months ended October 31, 2006, Class A shares of Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value, excluding sales charges, returned 6.55%. These shares outperformed the Fund’s unmanaged benchmark, the Russell 1000 Index, which returned 5.55% for the same period. The Lipper Large-Cap Core Funds Category Average¹ increased 2.97% over the same time frame.


	Performance Snapshot as of October 31, 2006 (excluding sales charges) (unaudited)


		6 Months

MDF Large Cap Growth and Value — Class A Shares		6.55%

Russell 1000 Index		5.55%

Lipper Large-Cap Core Funds Category Average		2.97%


	The performance shown represents past performance. Past performance is no guarantee of future results and current performance may be higher or lower than the performance shown above. Principal value and investment returns will fluctuate and investors’ shares, when redeemed, may be worth more or less than their original cost. To obtain performance data current to the most recent month-end, please visit our website at www.leggmason.com/InvestorServices.

	Excluding sales charges, Class B shares returned 6.11% and Class C shares returned 6.22% over the six months ended October 31, 2006. All share class returns assume the reinvestment of all distributions, including returns of capital, if any, at net asset value and the deduction of all Fund expenses. Returns have not been adjusted to include sales charges that may apply when shares are purchased or the deduction of taxes that a shareholder would pay on Fund distributions.

	Performance figures reflect reimbursements and/or fee waivers, without which the performance would have been lower.

¹ Lipper, Inc. is a major independent mutual-fund tracking organization. Returns are based on the six-month period ended October 31, 2006, including the reinvestment of all distributions, including returns of capital, if any, calculated among the 951 funds in the Fund’s Lipper category, and excluding sales charges.

II Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value


	Special Shareholder Notices

As part of the continuing effort to integrate investment products managed by the advisers acquired with Citigroup Inc.’s asset management business, Legg Mason, Inc. (“Legg Mason”) recommended various Fund actions in order to streamline product offerings, standardize share class pricing features, eliminate redundancies and improve efficiencies within the organization. At Board meetings held during June and July 2006, the Fund’s Board reviewed and approved these recommendations, and provided authorization to move ahead with proxy solicitations for those matters needing shareholder approval.


	Effective August 1, 2006, Legg Mason Partners Fund Advisor, LLC (“LMPFA”) became the Fund’s investment manager and ClearBridge Advisors, LLC (“ClearBridge”), formerly CAM North America, LLC, became the Fund’s subadviser. The portfolio managers who are responsible for the day-to-day management of the Fund remain the same immediately prior to and immediately after the date of these changes. LMPFA and ClearBridge are wholly-owned subsidiaries of Legg Mason.
	The Fund’s Board also approved a reorganization pursuant to which the Fund’s assets would be acquired, and its liabilities assumed by the Legg Mason Partners Multiple Discipline Funds All Cap Growth and Value (the “Acquiring Fund”), in exchange for shares of the Acquiring Fund. The Fund would then be liquidated, and shares of the Acquiring Fund would be distributed to Fund shareholders. If shareholder approval is obtained, Fund actions are generally expected to be implemented during the first quarter of 2007.
	Certain changes regarding share class pricing and related matters were implemented on November 20, 2006. Please consult the Fund’s current prospectus for more information.
	The Fund was formerly known as Smith Barney Multiple Discipline Funds — Large Cap Growth and Value Fund.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value III

Information About Your Fund

As you may be aware, several issues in the mutual fund industry have come under the scrutiny of federal and state regulators. Affiliates of the Fund’s manager have, in recent years, received requests for information from various government regulators regarding market timing, late trading, fees, and other mutual fund issues in connection with various investigations. The regulators appear to be examining, among other things, the Fund’s response to market timing and shareholder exchange activity, including compliance with prospectus disclosure related to these subjects. The Fund is not in a position to predict the outcome of these requests and investigations.


	Important information with regard to recent regulatory developments that may affect the Fund is contained in the Notes to Financial Statements included in this report.
	As always, thank you for your confidence in our stewardship of your assets. We look forward to helping you meet your financial goals.

Sincerely,

R. Jay Gerken, CFA

Chairman, President and Chief Executive Officer

December 13, 2006

IV Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value

The information provided is not intended to be a forecast of future events, a guarantee of future results or investment advice. Views expressed may differ from those of the firm as a whole.

RISKS: Diversification does not assure against loss. The Fund may use derivatives, such as options and futures, which can be illiquid, may disproportionately increase losses, and have a potentially large impact on Fund performance. Foreign stocks are subject to certain risks of overseas investing not associated with domestic investing such as currency fluctuations and changes in political and economic conditions, which could result in significant market fluctuations. These risks are magnified in emerging markets. Please see the Fund’s prospectus for more information on these and other risks.

All index performance reflects no deduction for fees, expenses or taxes. Please note an investor cannot invest directly in an index.


ⁱ		Gross domestic product is a market value of goods and services produced by labor and property in a given country.

ⁱⁱ		The federal funds rate is the interest rate that banks with excess reserves at a Federal Reserve district bank charge other banks that need overnight loans.

ⁱⁱⁱ		The Federal Reserve Board is responsible for the formulation of a policy designed to promote economic growth, full employment, stable prices, and a sustainable pattern of international trade and payments.

^iv		The S&P 500 Index is an unmanaged index of 500 stocks that is generally representative of the performance of larger companies in the U.S.

^v		The Russell 1000 Index measures the performance of the 1,000 largest companies in the Russell 3000 Index, which represents approximately 92% of the total market capitalization of the Russell 3000 Index.

^vi		The Russell Midcap Index measures the performance of the 800 smallest companies in the Russell 1000 Index, which represents approximately 25% of the total market capitalization of the Russell 1000 Index.

^vii		The Russell 2000 Index measures the performance of the 2,000 smallest companies in the Russell 3000 Index, which represents approximately 8% of the total market capitalization of the Russell 3000 Index.

^viii		The Russell 3000 Value Index measures the performance of those Russell 3000 Index companies with lower price-to-book ratios and lower forecasted growth values. (A price-to-book ratio is the price of a stock compared to the difference between a company’s assets and liabilities).

^ix		The Russell 3000 Growth Index measures the performance of those Russell 3000 Index companies with higher price-to-book ratios and higher forecasted growth values.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value V

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Fund at a Glance (unaudited)


	Investment Breakdown

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 1

Fund Expenses (unaudited)

Example

As a shareholder of the Fund, you may incur two types of costs: (1) transaction costs, including front-end and back-end sales charges (loads) on purchase payments; and (2) ongoing costs, including management fees; distribution and/or service (12b-1) fees; and other Fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds.

This example is based on an investment of $1,000 invested on May 1, 2006 and held for the six months ended October 31, 2006.

Actual Expenses

The table below titled “Based on Actual Total Return” provides information about actual account values and actual expenses. You may use the information provided in this table, together with the amount you invested, to estimate the expenses that you paid over the period. To estimate the expenses you paid on your account, divide your ending account value by $1,000 (for example, an $8,600 ending account value divided by $1,000 = 8.6), then multiply the result by the number under the heading entitled “Expenses Paid During the Period”.


	Based on Actual Total Return⁽¹⁾


	Actual Total
	Return
	Without			Beginning		Ending		Annualized			Expenses
	Sales			Account		Account		Expense			Paid During
	Charges⁽²⁾			Value		Value		Ratio			the Period⁽³⁾

Class A		6.55	%	$	1,000.00	$	1,065.50		1.26	%	$	6.56

Class B		6.11			1,000.00		1,061.10		2.04			10.60

Class C		6.22			1,000.00		1,062.20		2.02			10.50


⁽¹⁾		For the six months ended October 31, 2006.

⁽²⁾		Assumes reinvestment of all distributions, including returns of capital, if any, at net asset value and does not reflect the deduction of the applicable sales charge with respect to Class A shares or the applicable contingent deferred sales charges (“CDSC”) with respect to Class B and Class C shares. Total return is not annualized, as it may not be representative of the total return for the year. Performance figures may reflect fee waivers and/or expense reimbursements. Past performance is no guarantee of future results. In the absence of fee waivers and/or expense reimbursements, the total return would have been lower.

⁽³⁾		Expenses (net of fee waivers and/or expense reimbursements) are equal to each class’ respective annualized expense ratio multiplied by the average account value over the period, multiplied by the number of days in the most recent fiscal half-year, then divided by 365.

2 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Fund Expenses (unaudited) (continued)

Hypothetical Example for Comparison Purposes

The table below titled “Based on Hypothetical Total Return” provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio and an assumed rate of return of 5.00% per year before expenses, which is not the Fund’s actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use the information provided in this table to compare the ongoing costs of investing in the Fund and other funds. To do so, compare the 5.00% hypothetical example relating to the Fund with the 5.00% hypothetical examples that appear in the shareholder reports of the other funds.

Please note that the expenses shown in the table below are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as front-end or back-end sales charges (loads). Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher.


	Based on Hypothetical Total Return⁽¹⁾


	Hypothetical			Beginning		Ending		Annualized			Expenses
	Annualized			Account		Account		Expense			Paid During
	Total Return			Value		Value		Ratio			the Period⁽²⁾

Class A		5.00	%	$	1,000.00	$	1,018.85		1.26	%	$	6.41

Class B		5.00			1,000.00		1,014.92		2.04			10.36

Class C		5.00			1,000.00		1,015.02		2.02			10.26


⁽¹⁾		For the six months ended October 31, 2006.

⁽²⁾		Expenses (net of fee waivers and/or expense reimbursements) are equal to each class’ respective annualized expense ratio multiplied by the average account value over the period, multiplied by the number of days in the most recent fiscal half-year, then divided by 365.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 3


	Schedule of Investments (October 31, 2006) (unaudited)

LEGG MASON PARTNERS MULTIPLE DISCIPLINE FUNDS LARGE CAP GROWTH AND VALUE


Shares		Security	Value

COMMON STOCKS — 97.6%
CONSUMER DISCRETIONARY — 18.3%
Hotels, Restaurants & Leisure — 1.1%
	33,040	McDonald’s Corp.	$	1,385,037

Household Durables — 0.9%
	39,750	Newell Rubbermaid Inc.		1,144,005

Internet & Catalog Retail — 3.4%
	59,000	Amazon.com Inc.*		2,247,310
	40,000	Expedia Inc.*		650,000
	49,000	IAC/ InterActiveCorp.*		1,518,020

		Total Internet & Catalog Retail		4,415,330

Media — 8.2%
	20,000	EchoStar Communications Corp., Class A Shares*		710,400
	9,435	Liberty Media Holding Corp., Capital Group, Series A Shares*		840,281
	47,175	Liberty Media Holding Corp., Interactive Group, Series A Shares*		1,041,152
	83,500	News Corp., Class B Shares		1,815,290
	212,300	Time Warner Inc.		4,248,123
	60,900	Walt Disney Co.		1,915,914

		Total Media		10,571,160

Multiline Retail — 0.6%
	12,500	Target Corp.		739,750

Specialty Retail — 4.1%
	37,000	Bed Bath & Beyond Inc.*		1,490,730
	101,300	Home Depot Inc.		3,781,529

		Total Specialty Retail		5,272,259

		TOTAL CONSUMER DISCRETIONARY		23,527,541

CONSUMER STAPLES — 11.1%
Beverages — 3.5%
	55,000	Coca-Cola Co.		2,569,600
	30,000	PepsiCo Inc.		1,903,200

		Total Beverages		4,472,800

Food & Staples Retailing — 1.7%
	39,690	Kroger Co.		892,628
	25,500	Wal-Mart Stores Inc.		1,256,640

		Total Food & Staples Retailing		2,149,268

Food Products — 1.5%
	37,625	Wm. Wrigley Jr. Co.		1,954,619

See Notes to Financial Statements.

4 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report


	Schedule of Investments (October 31, 2006) (unaudited) (continued)


Shares		Security	Value

Household Products — 2.8%
	15,400	Kimberly-Clark Corp.	$	1,024,408
	41,250	Procter & Gamble Co.		2,614,837

		Total Household Products		3,639,245

Tobacco — 1.6%
	26,200	Altria Group Inc.		2,130,846

		TOTAL CONSUMER STAPLES		14,346,778

ENERGY — 4.4%
Energy Equipment & Services — 1.2%
	27,000	Halliburton Co.		873,450
	9,500	Noble Corp.		665,950

		Total Energy Equipment & Services		1,539,400

Oil, Gas & Consumable Fuels — 3.2%
	14,960	ConocoPhillips		901,190
	12,500	Royal Dutch Shell PLC, ADR, Class A Shares		870,250
	8,500	Suncor Energy Inc.		651,525
	25,100	Total SA, ADR		1,710,314

		Total Oil, Gas & Consumable Fuels		4,133,279

		TOTAL ENERGY		5,672,679

FINANCIALS — 18.2%
Capital Markets — 4.8%
	19,300	Bank of New York Co. Inc.		663,341
	5,400	Goldman Sachs Group Inc.		1,024,866
	52,100	Merrill Lynch & Co. Inc.		4,554,582

		Total Capital Markets		6,242,789

Commercial Banks — 2.8%
	41,040	Wachovia Corp.		2,277,720
	38,000	Wells Fargo & Co.		1,379,020

		Total Commercial Banks		3,656,740

Consumer Finance — 2.4%
	24,100	American Express Co.		1,393,221
	21,000	Capital One Financial Corp.		1,665,930

		Total Consumer Finance		3,059,151

Diversified Financial Services — 2.1%
	25,218	Bank of America Corp.		1,358,494
	27,700	JPMorgan Chase & Co.		1,314,088

		Total Diversified Financial Services		2,672,582

See Notes to Financial Statements.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 5


	Schedule of Investments (October 31, 2006) (unaudited) (continued)


Shares		Security	Value

Insurance — 6.1%
	17,500	AFLAC Inc.	$	786,100
	53,950	American International Group Inc.		3,623,821
	19,340	Chubb Corp.		1,027,921
	33,000	Marsh & McLennan Cos. Inc.		971,520
	27,000	St. Paul Travelers Cos. Inc.		1,380,510

		Total Insurance		7,789,872

		TOTAL FINANCIALS		23,421,134

HEALTH CARE — 14.8%
Biotechnology — 5.7%
	44,200	Amgen Inc.*		3,355,222
	41,000	Biogen Idec Inc.*		1,951,600
	23,950	Genentech Inc.*		1,995,035

		Total Biotechnology		7,301,857

Health Care Providers & Services — 2.4%
	30,500	UnitedHealth Group Inc.		1,487,790
	21,000	WellPoint Inc.*		1,602,720

		Total Health Care Providers & Services		3,090,510

Pharmaceuticals — 6.7%
	17,500	Abbott Laboratories		831,425
	50,950	Johnson & Johnson		3,434,030
	18,600	Novartis AG, ADR		1,129,578
	92,100	Pfizer Inc.		2,454,465
	20,000	Sanofi-Aventis, ADR		853,800

		Total Pharmaceuticals		8,703,298

		TOTAL HEALTH CARE		19,095,665

INDUSTRIALS — 6.5%
Aerospace & Defense — 1.3%
	12,000	Boeing Co.		958,320
	14,500	Raytheon Co.		724,275

		Total Aerospace & Defense		1,682,595

Building Products — 0.5%
	23,000	Masco Corp.		635,950

Commercial Services & Supplies — 0.9%
	18,800	Avery Dennison Corp.		1,187,032

Industrial Conglomerates — 3.2%
	74,100	General Electric Co.		2,601,651
	16,950	Textron Inc.		1,541,264

		Total Industrial Conglomerates		4,142,915

See Notes to Financial Statements.

6 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report


	Schedule of Investments (October 31, 2006) (unaudited) (continued)


Shares		Security	Value

Machinery — 0.6%
	8,500	Parker Hannifin Corp.	$	710,855

		TOTAL INDUSTRIALS		8,359,347

INFORMATION TECHNOLOGY — 17.4%
Communications Equipment — 3.6%
	108,600	Cisco Systems Inc.*		2,620,518
	33,500	Comverse Technology Inc.*		729,295
	65,000	Nokia Oyj, ADR		1,292,200

		Total Communications Equipment		4,642,013

Computers & Peripherals — 2.9%
	76,600	Dell Inc.*		1,863,678
	19,490	International Business Machines Corp.		1,799,512

		Total Computers & Peripherals		3,663,190

Internet Software & Services — 2.0%
	97,500	Yahoo! Inc.*		2,568,150

Semiconductors & Semiconductor Equipment — 4.4%
	126,800	Intel Corp.		2,705,912
	98,400	Texas Instruments Inc.		2,969,712

		Total Semiconductors & Semiconductor Equipment		5,675,624

Software — 4.5%
	38,000	Electronic Arts Inc.*		2,009,820
	132,200	Microsoft Corp.		3,795,462

		Total Software		5,805,282

		TOTAL INFORMATION TECHNOLOGY		22,354,259

MATERIALS — 1.7%
Chemicals — 1.7%
	16,450	Air Products & Chemicals Inc.		1,146,072
	23,500	E.I. du Pont de Nemours & Co.		1,076,300

		TOTAL MATERIALS		2,222,372

TELECOMMUNICATION SERVICES — 4.2%
Diversified Telecommunication Services — 1.5%
	38,095	AT&T Inc.		1,304,754
	14,309	Embarq Corp.		691,840

		Total Diversified Telecommunication Services		1,996,594

Wireless Telecommunication Services — 2.7%
	24,000	ALLTEL Corp.		1,279,440
	114,480	Sprint Nextel Corp.		2,139,631

		Total Wireless Telecommunication Services		3,419,071

		TOTAL TELECOMMUNICATION SERVICES		5,415,665

See Notes to Financial Statements.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 7


	Schedule of Investments (October 31, 2006) (unaudited) (continued)


Shares		Security	Value

UTILITIES — 1.0%
Multi-Utilities — 1.0%
	24,300	Sempra Energy	$	1,288,872

		TOTAL INVESTMENTS BEFORE SHORT-TERM INVESTMENT (Cost — $120,899,157)		125,704,312


Face
Amount

SHORT-TERM INVESTMENT — 1.3%
Repurchase Agreement — 1.3%
$	1,631,000	State Street Bank & Trust Co., dated 10/31/06, 4.820% due 11/1/06; Proceeds at maturity — $1,631,218; (Fully collateralized by U.S. Treasury Bonds, 6.250% due 8/15/23; Market value — $1,668,296) (Cost — $1,631,000)		1,631,000

		TOTAL INVESTMENTS — 98.9% (Cost — $122,530,157#)		127,335,312
		Other Assets in Excess of Liabilities — 1.1%		1,445,601

		TOTAL NET ASSETS — 100.0%	$	128,780,913


*		Non-income producing security.

^#		Aggregate cost for federal income tax purposes is substantially the same.

		Abbreviation used in this schedule:


ADR		— American Depositary Receipt

See Notes to Financial Statements.

8 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report


	Statement of Assets and Liabilities (October 31, 2006) (unaudited)


ASSETS:
	Investments, at value (Cost — $122,530,157)	$	127,335,312
	Receivable for securities sold		1,855,313
	Dividends and interest receivable		80,562
	Receivable for Fund shares sold		13,098
	Prepaid expenses		14,096

	Total Assets		129,298,381

LIABILITIES:
	Due to custodian		172,352
	Payable for Fund shares repurchased		145,311
	Investment management fee payable		81,788
	Distribution fees payable		32,959
	Directors’ fees payable		931
	Accrued expenses		84,127

	Total Liabilities		517,468

Total Net Assets		$	128,780,913

NET ASSETS:
	Par value (Note 6)	$	13,105
	Paid-in capital in excess of par value		267,512,387
	Accumulated net investment loss		(102,901	)
	Accumulated net realized loss on investments and foreign currency transactions		(143,446,833	)
	Net unrealized appreciation on investments		4,805,155

Total Net Assets		$	128,780,913

Shares Outstanding:
	Class A		3,755,978

	Class B		5,231,135

	Class C		4,118,196

Net Asset Value:
	Class A (and redemption price)		$10.08

	Class B*		$9.72

	Class C*		$9.73

Maximum Public Offering Price Per Share:
	Class A (based on maximum sales charge of 5.00%)		$10.61

* Redemption price is NAV of Class B and C shares reduced by a 5.00% and 1.00% CDSC, respectively, if shares are redeemed within one year from purchase payment (See Note 2)

See Notes to Financial Statements.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 9


	Statement of Operations (For the six months ended October 31, 2006) (unaudited)


INVESTMENT INCOME:
	Dividends		$	1,006,107
	Interest			87,173
	Less: Foreign taxes withheld			(10,776	)

	Total Investment Income			1,082,504

EXPENSES:
	Distribution fees (Note 2 and 4)			511,408
	Investment management fee (Note 2)			490,836
	Transfer agent fees (Note 4)			59,780
	Merger and proxy fees			34,260
	Shareholder reports (Note 4)			28,969
	Registration fees			22,240
	Audit and tax			14,367
	Legal fees			13,084
	Custody fees			3,647
	Directors’ fees			2,521
	Insurance			2,074
	Miscellaneous expenses			2,554

	Total Expenses			1,185,740
	Less: Fee waivers and/or expense reimbursements (Notes 2 and 8)			(360	)

	Net Expenses			1,185,380

Net Investment Loss				(102,876	)

REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY TRANSACTIONS (NOTES 1 AND 3):
	Net Realized Gain (Loss) From:
		Investment transactions		3,984,336
		Foreign currency transactions		(12	)

	Net Realized Gain			3,984,324

	Change in Net Unrealized Appreciation/ Depreciation From Investments			3,604,061

Net Gain on Investments and Foreign Currency Transactions				7,588,385

Increase in Net Assets From Operations			$	7,485,509

See Notes to Financial Statements.

10 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report


	Statements of Changes in Net Assets

	For the six months ended October 31, 2006 (unaudited)
	and the year ended April 30, 2006


		October 31			April 30

OPERATIONS:
	Net investment loss	$	(102,876	)	$	(272,528	)
	Net realized gain		3,984,324			10,611,770
	Change in net unrealized appreciation/depreciation		3,604,061			8,334,288

	Increase in Net Assets From Operations		7,485,509			18,673,530

DISTRIBUTIONS TO SHAREHOLDERS FROM (NOTES 1 AND 5):
	Net investment income		—			(192,567	)

	Decrease in Net Assets From Distributions to Shareholders		—			(192,567	)

FUND SHARE TRANSACTIONS (NOTE 6):
	Net proceeds from sale of shares		1,305,803			4,146,305
	Reinvestment of distributions		—			177,230
	Cost of shares repurchased		(20,432,795	)		(64,072,346	)

	Decrease in Net Assets From Fund Share Transactions		(19,126,992	)		(59,748,811	)

Decrease in Net Assets			(11,641,483	)		(41,267,848	)
NET ASSETS:
	Beginning of period		140,422,396			181,690,244

	End of period*	$	128,780,913		$	140,422,396

* Includes overdistributed net investment income of:			—			$(25	)

* Includes accumulated net investment loss of:			$(102,901	)		—

See Notes to Financial Statements.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 11


	Financial Highlights

For a share of each class of capital stock outstanding throughout each year ended April 30, unless otherwise noted:


Class A Shares⁽¹⁾		2006⁽²⁾			2006			2005			2004			2003			2002

Net Asset Value, Beginning of Period			$9.46			$8.48			$8.55			$6.89			$9.55			$11.10

Income (Loss) From Operations:
	Net investment income		0.02			0.04			0.08			0.02			0.06			0.03
	Net realized and unrealized gain (loss)		0.60			0.98			(0.08	)		1.71			(2.72	)		(1.58	)

Total Income (Loss) From Operations			0.62			1.02			0.00			1.73			(2.66	)		(1.55	)

Less Distributions From:
	Net investment income		—			(0.04	)		(0.07	)		(0.07	)		—			—

Total Distributions			—			(0.04	)		(0.07	)		(0.07	)		—			—

Net Asset Value, End of Period			$10.08			$9.46			$8.48			$8.55			$6.89			$9.55

Total Return⁽³⁾			6.55	%		12.04	%		0.03	%		25.09	%		(27.85	)%		(13.96	)%

Net Assets, End of Period (000s)			$37,857			$40,182			$48,932			$56,898			$51,360			$93,551

Ratios to Average Net Assets:
	Gross expenses		1.27	%⁽⁴⁾		1.22	%		1.26	%		1.16	%		1.19	%		1.18	%
	Gross expenses, excluding interest expense		1.27	⁽⁴⁾		1.22			1.26			1.16			1.19			1.18
	Net expenses⁽⁵⁾		1.26	⁽⁴⁾⁽⁶⁾		1.20	⁽⁶⁾		1.18	⁽⁶⁾		1.16			1.19			1.18
	Net expenses, excluding interest expense⁽⁵⁾		1.26	⁽⁴⁾⁽⁶⁾		1.20	⁽⁶⁾		1.18	⁽⁶⁾		1.16			1.19			1.18
	Net investment income		0.39	⁽⁴⁾		0.39			0.96			0.29			0.81			0.34

Portfolio Turnover Rate			8	%		29	%		22	%		58	%		55	%		37	%


⁽¹⁾		Per share amounts have been calculated using the average shares method.

⁽²⁾		For the six months ended October 31, 2006 (unaudited).

⁽³⁾		Performance figures may reflect fee waivers and/or expense reimbursements. Past performance is no guarantee of future results. In the absence of fee waivers and/or expense reimbursements, the total return would have been lower. Total returns for periods of less than one year are not annualized.

⁽⁴⁾		Annualized.

⁽⁵⁾		As a result of a voluntary expense limitation, the ratio of expenses to average net assets, other than interest, brokerage, taxes and extraordinary expenses, of Class A shares will not exceed 1.40%.

⁽⁶⁾		Reflects fee waivers and/or expense reimbursements.

See Notes to Financial Statements.

12 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report


	Financial Highlights (continued)

For a share of each class of capital stock outstanding throughout each year ended April 30, unless otherwise noted:


Class B Shares⁽¹⁾		2006⁽²⁾			2006			2005			2004			2003			2002

Net Asset Value, Beginning of Period			$9.16			$8.24			$8.31			$6.70			$9.35			$10.96

Income (Loss) From Operations:
	Net investment income (loss)		(0.02	)		(0.03	)		0.02			(0.04	)		0.00	⁽³⁾		(0.04	)
	Net realized and unrealized gain (loss)		0.58			0.95			(0.08	)		1.66			(2.65	)		(1.57	)

Total Income (Loss) From Operations			0.56			0.92			(0.06	)		1.62			(2.65	)		(1.61	)

Less Distributions From:
	Net investment income		—			—			(0.01	)		(0.01	)		—			—

Total Distributions			—			—			(0.01	)		(0.01	)		—			—

Net Asset Value, End of Period			$9.72			$9.16			$8.24			$8.31			$6.70			$9.35

Total Return⁽⁴⁾			6.11	%		11.17	%		(0.72	)%		24.14	%		(28.34	)%		(14.69	)%

Net Assets, End of Period (000s)			$50,869			$56,671			$75,871			$104,478			$106,276			$194,364

Ratios to Average Net Assets:
	Gross expenses		2.05	% ⁽⁵⁾		1.99	%		2.01	%		1.91	%		1.94	%		1.92	%
	Gross expenses, excluding interest expense		2.05	⁽⁵⁾		1.99			2.01			1.91			1.94			1.92
	Net expenses⁽⁶⁾		2.04	⁽⁵⁾⁽⁷⁾		1.97	⁽⁷⁾		1.94	⁽⁷⁾		1.91			1.94			1.92
	Net expenses, excluding interest expense⁽⁶⁾		2.04	⁽⁵⁾⁽⁷⁾		1.96	⁽⁷⁾		1.94	⁽⁷⁾		1.91			1.94			1.92
	Net investment income (loss)		(0.39	)⁽⁵⁾		(0.38	)		0.20			(0.47	)		0.06			(0.41	)

Portfolio Turnover Rate			8	%		29	%		22	%		58	%		55	%		37	%


⁽¹⁾		Per share amounts have been calculated using the average shares method.

⁽²⁾		For the six months ended October 31, 2006 (unaudited).

⁽³⁾		Amount represents less than $0.01 per share.

⁽⁴⁾		Performance figures may reflect fee waivers and/or expense reimbursements. Past performance is no guarantee of future results. In the absence of fee waivers and/or expense reimbursements, the total return would have been lower. Total returns for periods of less than one year are not annualized.

⁽⁵⁾		Annualized.

⁽⁶⁾		As a result of a voluntary expense limitation, the ratio of expenses to average net assets, other than interest, brokerage, taxes and extraordinary expenses, of Class B shares will not exceed 2.15%.

⁽⁷⁾		Reflects fee waivers and/or expense reimbursements.

See Notes to Financial Statements.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 13


	Financial Highlights (continued)

For a share of each class of capital stock outstanding throughout each year ended April 30, unless otherwise noted:


Class C Shares⁽¹⁾		2006⁽²⁾			2006			2005			2004			2003			2002

Net Asset Value, Beginning of Period			$9.16			$8.24			$8.31			$6.70			$9.35			$10.96

Income (Loss) From Operations:
	Net investment income (loss)		(0.02	)		(0.03	)		0.02			(0.04	)		0.00	⁽³⁾		(0.04	)
	Net realized and unrealized gain (loss)		0.59			0.95			(0.08	)		1.66			(2.65	)		(1.57	)

Total Income (Loss) From Operations			0.57			0.92			(0.06	)		1.62			(2.65	)		(1.61	)

Less Distributions From:
	Net investment income		—			—			(0.01	)		(0.01	)		—			—

Total Distributions			—			—			(0.01	)		(0.01	)		—			—

Net Asset Value, End of Period			$9.73			$9.16			$8.24			$8.31			$6.70			$9.35

Total Return⁽⁴⁾			6.22	%		11.17	%		(0.72	)%		24.15	%		(28.34	)%		(14.69	)%

Net Assets, End of Period (000s)			$40,055			$43,569			$56,887			$75,181			$74,027			$139,684

Ratios to Average Net Assets:
	Gross expenses		2.03	% ⁽⁵⁾		1.98	%		2.01	%		1.92	%		1.93	%		1.92	%
	Gross expenses, excluding interest expense		2.03	⁽⁵⁾		1.98			2.01			1.92			1.93			1.92
	Net expenses⁽⁶⁾		2.02	⁽⁵⁾⁽⁷⁾		1.96	⁽⁷⁾		1.93	⁽⁷⁾		1.92			1.93			1.92
	Net expenses, excluding interest expense⁽⁶⁾		2.02	⁽⁵⁾⁽⁷⁾		1.96	⁽⁷⁾		1.93	⁽⁷⁾		1.92			1.93			1.92
	Net investment income (loss)		(0.37	)⁽⁵⁾		(0.37	)		0.21			(0.48	)		0.07			(0.41	)

Portfolio Turnover Rate			8	%		29	%		22	%		58	%		55	%		37	%


⁽¹⁾		Per share amounts have been calculated using the average shares method.

⁽²⁾		For the six months ended October 31, 2006 (unaudited).

⁽³⁾		Amount represents less than $0.01 per share.

⁽⁴⁾		Performance figures may reflect fee waivers and/or expense reimbursements. Past performance is no guarantee of future results. In the absence of fee waivers and/or expense reimbursements, the total return would have been lower. Total returns for periods of less than one year are not annualized.

⁽⁵⁾		Annualized.

⁽⁶⁾		As a result of a voluntary expense limitation, the ratio of expenses to average net assets, other than interest, brokerage, taxes and extraordinary expenses, of Class C shares will not exceed 2.15%.

⁽⁷⁾		Reflects fee waivers and/or expense reimbursements.

See Notes to Financial Statements.

14 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Notes to Financial Statements (unaudited)


1.	Organization and Significant Accounting Policies

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value (the “Fund”) is a separate non-diversified series of Legg Mason Partners Investment Funds, Inc. (the “Company”). The Company, a Maryland corporation, is registered under the Investment Company Act of 1940, as amended (the “1940 Act”), as an open-end management investment company.

The following are significant accounting policies consistently followed by the Fund and are in conformity with U.S. generally accepted accounting principles (“GAAP”). Estimates and assumptions are required to be made regarding assets, liabilities and changes in net assets resulting from operations when financial statements are prepared. Changes in the economic environment, financial markets and any other parameters used in determining these estimates could cause actual results to differ.

(a) Investment Valuation. Equity securities for which market quotations are available are valued at the last sale price or official closing price on the primary market or exchange on which they trade. Debt securities are valued at the mean between the bid and asked prices provided by an independent pricing service that are based on transactions in debt obligations, quotations from bond dealers, market transactions in comparable securities and various other relationships between securities. When prices are not readily available, or are determined not to reflect fair value, such as when the value of a security has been significantly affected by events after the close of the exchange or market on which the security is principally traded, but before the Fund calculates its net asset value, the Fund may value these investments at fair value as determined in accordance with the procedures approved by the Fund’s Board of Directors. Short-term obligations with maturities of 60 days or less are valued at amortized cost, which approximates market value.

(b) Repurchase Agreements. When entering into repurchase agreements, it is the Fund’s policy that its custodian or a third party custodian take possession of the underlying collateral securities, the market value of which at least equals the principal amount of the repurchase transaction, including accrued interest. To the extent that any repurchase transaction exceeds one business day, the value of the collateral is marked-to-market to ensure the adequacy of the collateral. If the seller defaults, and the market value of the collateral declines or if bankruptcy proceedings are commenced with respect to the seller of the security, realization of the collateral by the Fund may be delayed or limited.

(c) Security Transactions and Investment Income. Security transactions are accounted for on a trade date basis. Interest income, adjusted for amortization of premium and accretion of discount, is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Foreign dividend income is recorded on the ex-dividend date or as soon as practical after the Fund determines the existence of a dividend declaration after exercising reasonable due diligence. The cost of investments sold is determined by use of the specific identification method. To the extent any issuer defaults on an expected interest payment, the Fund’s policy is to generally halt any additional interest income accruals and consider the realizability of interest accrued up to the date of default.

(d) Foreign Currency Translation. Investment securities and other assets and liabilities denominated in foreign currencies are translated into U.S. dollar amounts based

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 15

Notes to Financial Statements (unaudited) (continued)

upon prevailing exchange rates on the date of valuation. Purchases and sales of investment securities and income and expense items denominated in foreign currencies are translated into U.S. dollar amounts based upon prevailing exchange rates on the respective dates of such transactions.

The Fund does not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in market prices of securities held. Such fluctuations are included with the net realized and unrealized gain or loss on investments.

Net realized foreign exchange gains or losses arise from sales of foreign currencies, including gains and losses on forward foreign currency contracts, currency gains or losses realized between the trade and settlement dates on securities transactions and the difference between the amounts of dividends, interest and foreign withholding taxes recorded on the Fund’s books and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign exchange gains and losses arise from changes in the fair values of assets and liabilities, other than investments in securities, at the date of valuation, resulting from changes in exchange rates.

Foreign security and currency transactions may involve certain considerations and risks not typically associated with those of U.S. dollar denominated transactions as a result of, among other factors, the possibility of lower levels of governmental supervision and regulation of foreign securities markets and the possibility of political or economic instability.

(e) Distributions to Shareholders. Distributions from net investment income and distributions of net realized gains, if any, are declared at least annually. Distributions to shareholders of the Fund are recorded on the ex-dividend date and are determined in accordance with income tax regulations, which may differ from GAAP.

(f) Class Accounting. Investment income, common expenses and realized/unrealized gain (loss) on investments are allocated to the various classes of the Fund on the basis of daily net assets of each class. Fees relating to a specific class are charged directly to that class.

(g) Federal and Other Taxes. It is the Fund’s policy to comply with the federal income and excise tax requirements of the Internal Revenue Code of 1986, as amended, applicable to regulated investment companies. Accordingly, the Fund intends to distribute substantially all of its income and net realized gains on investments, if any, to shareholders each year. Therefore, no federal income tax provision is required in the Fund’s financial statements. Under the applicable foreign tax laws, a withholding tax may be imposed on interest, dividends and capital gains at various rates.

(h) Reclassification. GAAP requires that certain components of net assets be adjusted to reflect permanent differences between financial and tax reporting. These reclassifications have no effect on net assets or net asset values per share.


2.	Investment Management Agreement and Other Transactions with Affiliates

Prior to August 1, 2006, Smith Barney Fund Management LLC (“SBFM”), an indirect wholly-owned subsidiary of Legg Mason, Inc. (“Legg Mason”), acted as the investment manager of the Fund. Under the investment management agreement, the Fund paid an

16 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Notes to Financial Statements (unaudited) (continued)

investment management fee calculated daily and paid monthly in accordance with the following breakpoint schedule:


Average Daily Net Assets	Annual Rate

First $1 billion		0.750	%
Next $1 billion		0.725
Next $3 billion		0.700
Next $5 billion		0.675
Over $10 billion		0.650

Effective August 1, 2006, Legg Mason Partners Fund Advisor, LLC (“LMPFA”) became the Fund’s investment manager and ClearBridge Advisers, LLC (“ClearBridge”), formerly known as CAM North America, LLC, became the Fund’s subadviser. The portfolio managers who are responsible for the day-to-day management of the Fund remain the same immediately prior to and immediately after the date of these changes. LMPFA and ClearBridge are wholly-owned subsidiaries of Legg Mason.

LMPFA provides administrative and certain oversight services to the Fund. LMPFA has delegated to the subadviser the day-to-day portfolio management of the Fund, except for the management of cash and short-term instruments. The Fund’s investment management fee remains unchanged. For its services, LMPFA pays ClearBridge 70% of the net management fee it receives from the Fund.

During the six months ended October 31, 2006, the Fund’s Class A, B and C shares had voluntary expense limitations in place of 1.40%, 2.15% and 2.15%, respectively. During the six months ended October 31, 2006, the Fund was reimbursed for expenses in the amount of $360.

Citigroup Global Markets Inc. (“CGM”), PFS Investments Inc. (“PFS”) and Legg Mason Investor Services, LLC (“LMIS”) serve as co-distributors of the Fund. LMIS is a wholly-owned broker-dealer subsidiary of Legg Mason.

There is a maximum initial sales charge of 5.00% for Class A shares. There is a contingent deferred sales charge (“CDSC”) of 5.00% on Class B shares, which applies if redemption occurs within one year from purchase payment. This CDSC declines thereafter by 1.00% per year until no CDSC is incurred. Class C shares have a 1.00% CDSC, which applies if redemption occurs within one year from purchase payment. In certain cases, Class A shares have a 1.00% CDSC, which applies if redemption occurs within one year from purchase payment. This CDSC only applies to those purchases of Class A shares, which, when combined with current holdings of Class A shares, equal or exceed $1,000,000 in the aggregate. These purchases do not incur an initial sales charge.

For the six months ended October 31, 2006, LMIS and its affiliates received sales charges of approximately $500 on sales of the Fund’s Class A shares. In addition, for the six

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 17

Notes to Financial Statements (unaudited) (continued)

months ended October 31, 2006, CDSCs paid to LMIS and its affiliates were approximately:


	Class B		Class C

CDSCs	$	10,000	$	0*


		* Amount represents less than $1,000.

Effective November 20, 2006, the maximum initial sales charge on Class A shares of the Fund will increase from 5.00% to 5.75% for shares purchased on or after that date.

Certain officers and one Director of the Company are employees of Legg Mason or its affiliates and do not receive compensation from the Company.


3.	Investments

During the six months ended October 31, 2006, the aggregate cost of purchases and proceeds from sales of investments (excluding short-term investments) were as follows:



Purchases	$	9,536,606

Sales		26,686,343

At October 31, 2006, the aggregate gross unrealized appreciation and depreciation of investments for federal income tax purposes were substantially as follows:



Gross unrealized appreciation	$	17,186,039
Gross unrealized depreciation		(12,380,884	)

Net unrealized appreciation	$	4,805,155


4.	Class Specific Expenses

The Fund has adopted a Rule 12b-1 distribution plan and under that plan the Fund pays a service fee with respect to its Class A, B and C shares calculated at the annual rate of 0.25% of the average daily net assets of each respective class. The Fund also pays a distribution fee with respect to its Class B and C shares calculated at the annual rate of 0.75% of the average daily net assets of each class, respectively. Distribution fees are accrued daily and paid monthly.

For the six months ended October 31, 2006, class specific expenses were as follows:


					Shareholder Reports
	Distribution Fees		Transfer Agent Fees		Expenses

Class A	$	47,680	$	16,058	$	6,863
Class B		260,301		26,169		13,084
Class C		203,427		17,553		9,022

Total	$	511,408	$	59,780	$	28,969

18 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Notes to Financial Statements (unaudited) (continued)


5.	Distributions to Shareholders by Class


	Six Months Ended		Year Ended
	October 31, 2006		April 30, 2006

Net Investment Income
Class A		—	$	192,567

Total		—	$	192,567


6.	Capital Shares

At October 31, 2006, the Company had 10 billion shares of capital stock authorized with a par value of $0.001 per share. The Fund has the ability to issue multiple classes of shares. Each share of a class represents an identical interest in the Fund and has the same rights, except that each class bears certain direct expenses, including those specifically related to the distribution of its shares.

Transactions in shares of each class were as follows:


	Six Months Ended						Year Ended
	October 31, 2006						April 30, 2006

	Shares			Amount			Shares			Amount

Class A
Shares sold		75,343		$	708,874			300,719		$	2,749,444
Shares issued on reinvestment		—			—			19,119			177,230
Shares repurchased		(568,783	)		(5,349,783	)		(1,842,575	)		(16,871,376	)

Net Decrease		(493,440	)	$	(4,640,909	)		(1,522,737	)	$	(13,944,702	)

Class B
Shares sold		30,591		$	284,976			90,820		$	801,197
Shares repurchased		(986,818	)		(8,969,440	)		(3,112,700	)		(27,584,352	)

Net Decrease		(956,227	)	$	(8,684,464	)		(3,021,880	)	$	(26,783,155	)

Class C
Shares sold		33,412		$	311,953			67,300		$	595,664
Shares repurchased		(671,469	)		(6,113,572	)		(2,215,811	)		(19,616,618	)

Net Decrease		(638,057	)	$	(5,801,619	)		(2,148,511	)	$	(19,020,954	)


7.	Capital Loss Carryforward

As of April 30, 2006, the Fund had, for federal income tax purposes, net capital loss carryforwards of $147,326,546, of which $86,953,771 expires in 2011, and $60,372,775 expires in 2012. These amounts will be available to offset any future taxable capital gains.

Due to the proposed reorganization described in Note 11, the expiration dates of these loss carryforwards will move up by one year. Additionally, as a result of the reorganization, the loss carryforwards will be subject to various tax limitations, which may result in future taxable capital gain distributions to shareholders due to the fact that some portion of the Fund’s loss carryforwards may be unable to be utilized.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 19

Notes to Financial Statements (unaudited) (continued)


8.	Regulatory Matters

On May 31, 2005, the U.S. Securities and Exchange Commission (“SEC”) issued an order in connection with the settlement of an administrative proceeding against SBFM, the Fund’s prior investment manager, and CGM relating to the appointment of an affiliated transfer agent for the Smith Barney family of mutual funds, including the Fund (the “Funds”).

The SEC order finds that SBFM and CGM willfully violated Section 206(1) of the Investment Advisers Act of 1940 (“Advisers Act”). Specifically, the order finds that SBFM and CGM knowingly or recklessly failed to disclose to the boards of the Funds in 1999 when proposing a new transfer agent arrangement with an affiliated transfer agent that: First Data Investors Services Group (“First Data”), the Funds’ then-existing transfer agent, had offered to continue as transfer agent and do the same work for substantially less money than before; and that Citigroup Asset Management (“CAM”), the Citigroup business unit that, at the time, included the Fund’s investment manager and other investment advisory companies, had entered into a side letter with First Data under which CAM agreed to recommend the appointment of First Data as sub-transfer agent to the affiliated transfer agent in exchange for, among other things, a guarantee by First Data of specified amounts of asset management and investment banking fees to CAM and CGM. The order also finds that SBFM and CGM willfully violated Section 206(2) of the Advisers Act by virtue of the omissions discussed above and other misrepresentations and omissions in the materials provided to the Funds’ boards, including the failure to make clear that the affiliated transfer agent would earn a high profit for performing limited functions while First Data continued to perform almost all of the transfer agent functions, and the suggestion that the proposed arrangement was in the Funds’ best interests and that no viable alternatives existed. SBFM and CGM do not admit or deny any wrongdoing or liability. The settlement does not establish wrongdoing or liability for purposes of any other proceeding.

The SEC censured SBFM and CGM and ordered them to cease and desist from violations of Sections 206(1) and 206(2) of the Advisers Act. The order requires Citigroup to pay $208.1 million, including $109 million in disgorgement of profits, $19.1 million in interest, and a civil money penalty of $80 million. Approximately $24.4 million has already been paid to the Funds, primarily through fee waivers. The remaining $183.7 million, including the penalty, has been paid to the U.S. Treasury and will be distributed pursuant to a plan submitted for the approval of the SEC. At this time, there is no certainty as to how the above-described proceeds of the settlement will be distributed, to whom such distributions will be made, the methodology by which such distributions will be allocated, and when such distributions will be made. The order also required that transfer agency fees received from the Funds since December 1, 2004, less certain expenses, be placed in escrow and provided that a portion of such fees might be subsequently distributed in accordance with the terms of the order. On April 3, 2006, an aggregate amount of approximately $9 million was distributed to the affected Funds.

The order required SBFM to recommend a new transfer agent contract to the Fund boards within 180 days of the entry of the order; if a Citigroup affiliate submitted a proposal to serve as transfer agent or sub-transfer agent, SBFM and CGM would have been

20 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Notes to Financial Statements (unaudited) (continued)

required, at their expense, to engage an independent monitor to oversee a competitive bidding process. On November 21, 2005, and within the specified timeframe, the Fund’s Board selected a new transfer agent for the Fund. No Citigroup affiliate submitted a proposal to serve as transfer agent. Under the order, SBFM also must comply with an amended version of a vendor policy that Citigroup instituted in August 2004.

Although there can be no assurance, the Fund’s manager does not believe that this matter will have a material adverse effect on the Fund.

On December 1, 2005, Citigroup completed the sale of substantially all of its global asset management business, including SBFM, to Legg Mason.


9.	Legal Matters

Beginning in August 2005, five class action lawsuits alleging violations of federal securities laws and state law were filed against CGM and SBFM, (collectively, the “Defendants”) based on the May 31, 2005 settlement order issued against the Defendants by the SEC as described in Note 8. The complaints seek injunctive relief and compensatory and punitive damages, removal of SBFM as the adviser for the Smith Barney family of funds, rescission of the Funds’ management and other contracts with SBFM, recovery of all fees paid to SBFM pursuant to such contracts, and an award of attorneys’ fees and litigation expenses.

On October 5, 2005, a motion to consolidate the five actions and any subsequently filed, related action was filed. That motion contemplates that a consolidated amended complaint alleging substantially similar causes of action will be filed in the future.

As of the date of this report, the Fund’s investment manager believes that resolution of the pending lawsuit will not have a material effect on the financial position or results of operations of the Fund or the ability of the Fund’s investment manager and its affiliates to continue to render services to the Fund under their respective contracts.

* * *

Beginning in June 2004, class action lawsuits alleging violations of the federal securities laws were filed against CGM and a number of its then affiliates, including SBFM and Salomon Brothers Asset Management Inc. (“SBAM”), which were then investment adviser or manager to certain of the Funds (the “Managers”), substantially all of the mutual funds then managed by the Managers (the “Defendant Funds”), and Board Members of the Defendant Funds (collectively, the “Defendants”). The complaints alleged, among other things, that CGM created various undisclosed incentives for its brokers to sell Smith Barney and Salomon Brothers funds. In addition, according to the complaints, the Managers caused the Defendant Funds to pay excessive brokerage commissions to CGM for steering clients towards proprietary funds. The complaints also alleged that the Defendants breached their fiduciary duty to the Defendant Funds by improperly charging Rule 12b-1 fees and by drawing on fund assets to make undisclosed payments of soft dollars and excessive brokerage commissions. The complaints also alleged that the Defendant Funds failed to adequately disclose certain of the allegedly wrongful conduct. The complaints sought injunctive relief and compensatory and punitive damages, rescission of the Defendant Funds’ contracts with

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 21

Notes to Financial Statements (unaudited) (continued)

the Managers, recovery of all fees paid to the Managers pursuant to such contracts and an award of attorneys’ fees and litigation expenses.

On December 15, 2004, a consolidated amended complaint (the “Complaint”) was filed alleging substantially similar causes of action. On May 27, 2005, all of the Defendants filed motions to dismiss the Complaint. On July 26, 2006, the court issued a decision and order (1) finding that plaintiffs lacked standing to sue on behalf of the shareholders of the Funds in which none of the plaintiffs had invested (including the Fund) and dismissing those Funds from the case (although stating that they could be brought back into the case if standing as to them could be established), and (2) other than one stayed claim, dismissing all of the causes of action against the remaining Defendants, with prejudice, except for the cause of action under Section 36(b) of the Investment Company Act, which the court granted plaintiffs leave to repeal as a derivative claim.

On October 16, 2006, plaintiffs filed their Second Consolidated Amended Complaint (“Second Amended Complaint”) which alleges derivative claims on behalf of nine funds identified in the Second Amended Complaint, under the Fund Section 36(b) of the 1940 Act, against CAM, SBAM, SBFM and CGM as investment advisers to the identified funds, as well as CGM as a distributor for the identified funds (collectively, the “Second Amended Complaint Defendants”). The Second Amended Complaint alleges no claims against any of the Funds or any of their Board Members. Under Section 36(b), the Second Amended Complaint alleges similar facts and seeks similar relief against the Second Amended Complaint Defendants as the Complaint.

Additional lawsuits arising out of these circumstances and presenting similar allegations and requests for relief may be filed in the future.


10.	Other Matters

On September 16, 2005, the staff of the SEC informed SBFM and SBAM that the staff is considering recommending that the SEC institute administrative proceedings against SBFM and SBAM for alleged violations of Section 19(a) and 34(b) of the 1940 Act (and related Rule 19a-1). The notification is a result of an industry wide inspection by the SEC and is based upon alleged deficiencies in disclosures regarding dividends and distributions paid to shareholders of certain funds. Section 19(a) and related Rule 19a-1 of the 1940 Act generally require funds that are making dividend and distribution payments to provide shareholders with a written statement disclosing the source of the dividends and distributions, and, in particular, the portion of the payments made from each of net investment income, undistributed net profits and/or paid-in capital. In connection with the contemplated proceedings, the staff may seek a cease and desist order and/or monetary damages from SBFM or SBAM.

Although there can be no assurance, the Fund’s manager believes that this matter is not likely to have a material adverse effect on the Fund.


11.	Additional Shareholder Information

The Fund’s Board approved a reorganization pursuant to which the Fund’s assets would be acquired, and its liabilities assumed by Legg Mason Partners Multiple Discipline Funds All Cap Growth and Value (the “Acquiring Fund”), in exchange for shares of the Acquiring

22 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Notes to Financial Statements (unaudited) (continued)

Fund. The Fund would then be liquidated and shares of the Acquiring Fund would be distributed to Fund shareholders.

Under the reorganization, Fund shareholders would receive shares of the Acquiring Fund with the same aggregate net asset value as their shares of the Fund. It is anticipated that as a result of the reorganization, Fund shareholders would recognize no gain or loss for Federal income tax purposes. The reorganization is subject to the satisfaction of certain conditions, including approval by Fund shareholders. If Fund shareholder approval of the reorganization is obtained, Fund actions are generally expected to be implemented during the first half of 2007.

The Fund’s Board approved certain share class modifications which, among other things, standardize share class features for all equity and fixed income funds in the fund complex. The features standardized include such things as sales loads, distribution charges and other costs. These modifications were implemented on November 20, 2006.

The Fund’s Board also approved a number of initiatives designed to streamline and restructure the fund complex, and authorized seeking shareholder approval for those initiatives where shareholder approval is required. As a result, Fund shareholders have been asked to elect a new Board, approve matters that will result in the Fund being grouped for organizational and governance purposes with other funds in the fund complex, and domicile the Fund as a Maryland business trust, with all funds operating under uniform charter documents. Fund shareholders also have been asked to approve investment matters, including standardized fundamental investment policies. If shareholder approval is obtained, these matters generally are expected to be implemented during the first half of 2007.


12.	Recent Accounting Pronouncements

During June 2006, the Financial Accounting Standards Board (“FASB”) issued FASB Interpretation 48 (“FIN 48” or the “Interpretation”), Accounting for Uncertainty in Income Taxes — an interpretation of FASB Statement 109. FIN 48 supplements FASB Statement 109, Accounting for Income Taxes, by defining the confidence level that a tax position must meet in order to be recognized in the financial statements. FIN 48 prescribes a comprehensive model for how a fund should recognize, measure, present, and disclose in its financial statements uncertain tax positions that the fund has taken or expects to take on a tax return. FIN 48 requires that the tax effects of a position be recognized only if it is “more likely than not” to be sustained based solely on its technical merits. Management must be able to conclude that the tax law, regulations, case law, and other objective information regarding the technical merits sufficiently support the position’s sustainability with a likelihood of more than 50 percent. FIN 48 is effective for fiscal periods beginning after December 15, 2006. At adoption, the financial statements must be adjusted to reflect only those tax positions that are more likely than not to be sustained as of the adoption date. Management of the Fund has determined that adopting FIN 48 will not have a material impact on the Fund’s financial statements.

* * *

On September 20, 2006, FASB released Statement of Financial Accounting Standards No. 157 “Fair Value Measurements” (“FAS 157”). FAS 157 establishes an authoritative definition of fair value, sets out a framework for measuring fair value, and requires

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report 23

Notes to Financial Statements (unaudited) (continued)

additional disclosures about fair value measurements. The application of FAS 157 is required for fiscal years beginning after November 15, 2007 and interim periods within those fiscal years. At this time, management is evaluating the implications of FAS 157 and its impact on the financial statements has not yet been determined.

Should shareholders approve the reorganization proposal, these new standards will not be applicable.

24 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 2006 Semi-Annual Report

Board Approval of Management and Subadvisory
Agreements (unaudited)

At a meeting held in person on June 29, 2006, the Fund’s Board, including a majority of the Board members who are not “interested persons” of the Fund or Legg Mason Partners Fund Advisor, LLC (the “Manager”) or any sub-investment adviser or proposed sub-investment adviser as defined in the Investment Company Act of 1940, as amended (the “1940 Act”) (the “Independent Board Members”), approved a new management agreement (the “New Management Agreement”) between the Fund and the Manager. The Fund’s Board, including a majority of the Independent Board Members, also approved a new subadvisory agreement between the Manager and ClearBridge Advisors, LLC (the “Subadviser”) (the “New Subadvisory Agreement”). The New Management Agreement and the New Subadvisory Agreement replaced the Fund’s prior management agreement with Smith Barney Fund Management LLC and were entered into in connection with an internal reorganization of the Manager’s, the prior manager’s and the Subadviser’s parent organization, Legg Mason. In approving the New Management Agreement and New Subadvisory Agreement, the Board, including the Independent Board Members, considered the factors discussed below, among other things.

The Board noted that the Manager will provide administrative and certain oversight services to the Fund, and that the Manager will delegate to the Subadviser the day-to-day portfolio management of the Fund. The Board members reviewed the qualifications, backgrounds and responsibilities of the senior personnel that will provide oversight and general management services and the portfolio management team that would be primarily responsible for the day-to-day management of the Fund. The Board members noted that the portfolio managers who are responsible for the day-to-day management of the Fund would remain the same immediately prior to and after these changes.

The Board members received and considered information regarding the nature, extent and quality of services expected to be provided to the Fund by the Manager under the New Management Agreement and by the Subadviser under the New Subadvisory Agreement. The Board members’ evaluation of the services expected to be provided by the Manager and the Subadviser took into account the Board members’ knowledge and familiarity gained as Fund Board members, including as to the scope and quality of Legg Mason’s investment management and other capabilities and the quality of its administrative and other services. The Board members considered, among other things, information and assurances provided by Legg Mason as to the operations, facilities and organization of the Manager and the Subadviser and the qualifications, backgrounds and responsibilities of their senior personnel. The Board members further considered the financial resources available to the Manager, the Subadviser and Legg Mason. The Board members concluded that, overall, the nature, extent and quality of services expected to be provided under the New Management Agreement and the New Subadvisory Agreement were acceptable.

The Board members also received and considered performance information for the Fund as well as comparative information with respect to a peer group of funds (the “Performance Universe”) selected by Lipper, Inc. (“Lipper”), an independent provider of investment company data. The Board members were provided with a description of the methodology Lipper used to determine the similarity of the Fund to the funds included in the

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 25

Board Approval of Management and Subadvisory
Agreements (unaudited) (continued)

Performance Universe. The Board members noted that they had received and discussed with management, at periodic intervals, information comparing the Fund’s performance against, among other things, its benchmark. Based on the Board members’ review, which included careful consideration of the factors noted above, the Board members concluded that the performance of the Fund under the circumstances, supported approval of the New Management Agreement and New Subadvisory Agreement.

The Board members reviewed and considered the management fee that would be payable by the Fund to the Manager in light of the nature, extent and quality of the management services expected to be provided by the Manager, including the fee waiver and/or expense reimbursement arrangements currently in place. Additionally, the Board members received and considered information comparing the Fund’s management fee and overall expenses with those of comparable funds in both the relevant expense group and a broader group of funds, each selected and provided by Lipper. The Board members also reviewed and considered the subadvisory fee that would be payable by the Manager to the Subadviser in light of the nature, extent and quality of the management services expected to be provided by the Subadviser. The Board members noted that the Manager, and not the Fund, will pay the subadvisory fee to the Subadviser. The Board members determined that the Fund’s management fee and the Fund’s subadvisory fee were reasonable in light of the nature, extent and quality of the services expected to be provided to the Fund under the New Management Agreement and the New Subadvisory Agreement.

The Board members received and considered a pro-forma profitability analysis of Legg Mason and its affiliates in providing services to the Fund, including information with respect to the allocation methodologies used in preparing the profitability data. The Board members recognized that Legg Mason may realize economies of scale based on its internal reorganization and synergies of operations. The Board members noted that it was not possible to predict with a high degree of confidence how Legg Mason’s and its affiliates’ profitability would be affected by its internal reorganization and by other factors including potential economies of scale, but that based on their review of the pro-forma profitability analysis, their most recent prior review of the profitability of the predecessor manager and its affiliates from their relationship with the Fund and other factors considered, they determined that the management fee was reasonable. The Board members noted that they expect to receive profitability information on an annual basis.

In their deliberations, the Board members also considered, and placed significant importance on, information that had been received and conclusions that had been reached by the Board in connection with the Board’s most recent approval of the Fund’s prior management agreement, in addition to information provided in connection with the Board’s evaluation of the terms and conditions of the New Management Agreement and the New Subadvisory Agreement.

The Board members considered Legg Mason’s advice and the advice of its counsel that the New Management Agreement and the New Subadvisory Agreement were being entered into in connection with an internal reorganization within Legg Mason, that did not involve an actual change of control or management. The Board members further noted

26 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value

Board Approval of Management and Subadvisory
Agreements (unaudited) (continued)

that the terms and conditions of the New Management Agreement are substantially identical to those of the Fund’s previous management agreement except for the identity of the Manager, and that the initial term of the New Management Agreement (after which it will continue in effect only if such continuance is specifically approved at least annually by the Board, including a majority of the Independent Board Members) was the same as that under the prior management agreement.

In light of all of the foregoing, the Board, including the Independent Board Members, approved the New Management Agreement and the New Subadvisory Agreement. No single factor reviewed by the Board members was identified as the principal factor in determining whether to approve the New Management Agreement and the New Subadvisory Agreement. The Independent Board Members were advised by separate independent legal counsel throughout the process. The Independent Board Members also discussed the proposed approval of the New Management Agreement and the New Subadvisory Agreement in private sessions with their independent legal counsel at which no representatives of the Manager or Subadviser were present.

Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value 27

Additional Shareholder Information (unaudited)

Results of a Special Meeting of Shareholders

On December 11, 2006, a Special Meeting of Shareholders was held to elect Board Members. The following table provides the number of votes cast for or against, as well as the number of abstentions and broker non-votes as to the matter voted on at the Special Meeting of Shareholders.

Election of Board Members^†


			Votes				Broker
Item Voted On	Votes For		Against		Abstentions		Non-Votes

Nominees:
Paul R. Ades		121,866,497.391		3,054,107.186		0.000		0.000
Andrew L. Breech		121,900,821.025		3,019,783.552		0.000		0.000
Dwight B. Crane		121,850,512.564		3,070,092.013		0.000		0.000
Robert M. Frayn, Jr.		121,778,191.988		3,142,412.589		0.000		0.000
Frank G. Hubbard		121,848,495.495		3,072,109.082		0.000		0.000
Howard J. Johnson		121,865,914.325		3,054,690.252		0.000		0.000
David E. Maryatt		121,813,754.911		3,108,849.666		0.000		0.000
Jerome H. Miller		121,858,470.310		3,062,134.267		0.000		0.000
Ken Miller		121,889,516.870		3,031,087.707		0.000		0.000
John J. Murphy		121,864,667.771		3,055,936.806		0.000		0.000
Thomas F. Schlafly		121,848,850.151		3,071,754.426		0.000		0.000
Jerry A. Viscione		121,844,786.595		3,075,817.982		0.000		0.000
R. Jay Gerken, CFA		121,826,709.153		3,093,895.424		0.000		0.000


†		Board Members are elected by the shareholders of all of the series of the Company of which the Fund is a series.

28 Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value

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	Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value

DIRECTORS

Paul R. Ades
Dwight B. Crane
R. Jay Gerken, CFA
Chairman
Frank G. Hubbard
Jerome H. Miller
Ken Miller

INVESTMENT MANAGER

Legg Mason Partners
Fund Advisor, LLC

SUBADVISER

ClearBridge Advisors, LLC

DISTRIBUTORS

Citigroup Global Markets Inc.
Legg Mason Investor Services, LLC
PFS Investments Inc.

CUSTODIAN

State Street Bank and
Trust Company

TRANSFER AGENT

PFPC Inc.
4400 Computer Drive

Westborough, Massachusetts 01581

INDEPENDENT REGISTERED
PUBLIC ACCOUNTING FIRM

KPMG LLP
345 Park Avenue

New York, New York 10154



This report is submitted for the general information of the shareholders of Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value, but it may also be used as sales literature when preceded or accompanied by the current Prospectus. This report must be preceded or accompanied by a free prospectus. Investors should consider the Fund’s investment objectives, risks, charges and expenses carefully before investing. The prospectus contains this and other important information about the Fund. Please read the prospectus carefully before investing. www.leggmason.com/InvestorServices © 2006 Legg Mason Investor Services, LLC Member NASD, SIPC FD01760 12/06 SR06-192		Legg Mason Partners Multiple Discipline Funds Large Cap Growth and Value The Fund is a separate series of Legg Mason Partners Investment Funds, Inc., a Maryland corporation. LEGG MASON PARTNERS MULTIPLE DISCIPLINE FUNDS LARGE CAP GROWTH AND VALUE LEGG MASON PARTNERS FUNDS 125 Broad Street 10th Floor, MF-2 New York, New York 10004 The Fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year on Form N-Q. The Fund’s Forms N-Q are available on the Commission’s website at www.sec.gov. The Fund’s Forms N-Q may be reviewed and copied at the Commission’s Public Reference Room in Washington, D.C., and information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. To obtain information on Form N-Q from the Fund, shareholders can call Legg Mason Partners Shareholder Services at 1-800-451-2010. Information on how the Fund voted proxies relating to portfolio securities during the prior 12-month period ended June 30th of each year and a description of the policies and procedures that the Fund uses to determine how to vote proxies relating to portfolio transactions is available (1) without charge, upon request, by calling 1-800-451-2010, (2) on the Fund’s website at www.leggmason.com/InvestorServices and (3) on the SEC’s website at www.sec.gov.

ITEM 2. CODE OF ETHICS.

Not Applicable.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

Not Applicable.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable.

ITEM 6. SCHEDULE OF INVESTMENTS.

Included herein under Item 1.

ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable.

ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

Not applicable.

ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

Not applicable.

ITEM 11. CONTROLS AND PROCEDURES.

(a)

The registrant’s principal executive officer and principal financial officer have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a- 3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the disclosure controls and procedures required by Rule 30a-3(b) under the 1940 Act and 15d-15(b) under the Securities Exchange Act of 1934.

(b)

There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal half-year (the registrant’s second fiscal half-year in the case of an annual report) that have materially affected, or are likely to materially affect the registrant’s internal control over financial reporting.

ITEM 12. EXHIBITS.

(a)(1) Not applicable.

Exhibit 99.CODE ETH

(a)(2) Certifications pursuant to section 302 of the Sarbanes-Oxley Act of 2002 attached hereto.

Exhibit 99.CERT

(b) Certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 attached hereto.

Exhibit 99.906CERT

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this Report to be signed on its behalf by the undersigned, there unto duly authorized.


Legg Mason Partners Investment Funds, Inc.

By:		/s/ R. Jay Gerken

		(R. Jay Gerken)
		Chief Executive Officer of
		Legg Mason Partners Investment Funds, Inc.

Date: January 8, 2007

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:		/s/ R. Jay Gerken

		(R. Jay Gerken)
		Chief Executive Officer of
		Legg Mason Partners Investment Funds, Inc.

Date: January 8, 2007


By:		/s/ Kaprel Ozsolak

		(Kaprel Ozsolak)
		Chief Financial Officer of
		Legg Mason Partners Investment Funds, Inc.

Date: January 8, 2007

Legg Mason Partners Investment Funds Inactive N-CSRCertified annual shareholder report (management investment company)