CERTIFICATIONS PURSUANT TO SECTION 906
EX-99.906CERT
CERTIFICATION
R. Jay Gerken, Chief Executive Officer, and Kaprel Ozsolak, Chief Financial Officer of Legg Mason Partners Investment Funds, Inc. — Legg Mason Partners Multiple Discipline Funds Balanced All Cap Growth and Value (the “Registrant”), each certify to the best of his knowledge that:
1. The Registrant’s periodic report on Form N-CSR for the period ended October 31, 2006 (the “Form N-CSR”) fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and
2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant.
| | | | | | | |
| Chief Executive Officer | | Chief Financial Officer |
| Legg Mason Partners Investment Funds, Inc. — | | Legg Mason Partners Investment Funds, Inc. — |
| Legg Mason Partners Multiple Discipline Funds | | Legg Mason Partners Multiple Discipline Funds |
| Balanced All Cap Growth and Value | | Balanced All Cap Growth and Value |
| | | | | | | |
| /s/ R. Jay Gerken | | | | /s/ Kaprel Ozsolak | | |
| | | | | | | |
| R. Jay Gerken | | | | Kaprel Ozsolak | | |
| Date: January 8, 2007 | | | | Date: January 8, 2007 | | |
This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Form N-CSR with the Commission.
