<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S ANNUAL REPORT ON FORM 10-K AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> SEP-30-2000
<CASH> 21,823
<SECURITIES> 11,703
<RECEIVABLES> 13,251
<ALLOWANCES> 1,150
<INVENTORY> 0
<CURRENT-ASSETS> 48,729
<PP&E> 14,249
<DEPRECIATION> 9,041
<TOTAL-ASSETS> 55,619
<CURRENT-LIABILITIES> 18,326
<BONDS> 0
0
0
<COMMON> 11
<OTHER-SE> 37,293
<TOTAL-LIABILITY-AND-EQUITY> 55,619
<SALES> 54,442
<TOTAL-REVENUES> 54,442
<CGS> 9,691
<TOTAL-COSTS> 9,691
<OTHER-EXPENSES> 56,385
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 2
<INCOME-PRETAX> (9,757)
<INCOME-TAX> 746
<INCOME-CONTINUING> (10,503)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (10,503)
<EPS-BASIC> (1.00)
<EPS-DILUTED> (1.00)
</TABLE>