<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
ACCOMPANYING FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> SEP-30-2000
<CASH> 63,093
<SECURITIES> 59,127
<RECEIVABLES> 78
<ALLOWANCES> (10)
<INVENTORY> 0
<CURRENT-ASSETS> 142,937
<PP&E> 21,119
<DEPRECIATION> (14,395)
<TOTAL-ASSETS> 219,631
<CURRENT-LIABILITIES> 33,187
<BONDS> 0
0
0
<COMMON> 97
<OTHER-SE> 162,225
<TOTAL-LIABILITY-AND-EQUITY> 219,631
<SALES> 72,311
<TOTAL-REVENUES> 72,311
<CGS> 12,093
<TOTAL-COSTS> 12,093
<OTHER-EXPENSES> 203,726
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (138,794)
<INCOME-TAX> (32,667)
<INCOME-CONTINUING> (106,127)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (106,127)
<EPS-BASIC> (1.10)
<EPS-DILUTED> (1.10)
</TABLE>