<ARTICLE> 5 <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> SEP-30-1997 <PERIOD-START> OCT-01-1996 <PERIOD-END> MAR-31-1997 <CASH> 76,478 <SECURITIES> 272,652 <RECEIVABLES> 117,370 <ALLOWANCES> 7,589 <INVENTORY> 0 <CURRENT-ASSETS> 493,168 <PP&E> 147,576 <DEPRECIATION> 73,628 <TOTAL-ASSETS> 630,771 <CURRENT-LIABILITIES> 214,208 <BONDS> 12,260 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 622 <OTHER-SE> 401,474 <TOTAL-LIABILITY-AND-EQUITY> 630,771 <SALES> 310,674 <TOTAL-REVENUES> 310,674 <CGS> 40,501 <TOTAL-COSTS> 40,501 <OTHER-EXPENSES> 229,002 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 745 <INCOME-PRETAX> 54,960 <INCOME-TAX> 23,723 <INCOME-CONTINUING> 31,237 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 31,237 <EPS-PRIMARY> 0.51 <EPS-DILUTED> 0.48