<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
<S> <C> <C> <C>
<PERIOD-TYPE> YEAR YEAR YEAR
<FISCAL-YEAR-END> MAR-31-2000 MAR-31-1999 MAR-31-1998
<PERIOD-START> APR-01-1999 APR-01-1998 APR-01-1997
<PERIOD-END> MAR-31-2000 MAR-31-1999 MAR-31-1998
<CASH> 5,286 4,148 2,701
<SECURITIES> 11,196 1,999 1,000
<RECEIVABLES> 2,027 772 475
<ALLOWANCES> (27) (27) (27)
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 19,392 7,205 4,480
<PP&E> 1,906 1,164 502
<DEPRECIATION> (715) (319) (121)
<TOTAL-ASSETS> 21,320 9,668 5,399
<CURRENT-LIABILITIES> 6,555 5,056 1,859
<BONDS> 708 2,812 1,221
18,588 17,344 7,179
0 0 0
<COMMON> 4 4 3
<OTHER-SE> 28,843 3,329 2,909
<TOTAL-LIABILITY-AND-EQUITY> 21,320 9,668 5,399
<SALES> 8,859 3,891 736
<TOTAL-REVENUES> 8,859 3,891 736
<CGS> 1,054 708 210
<TOTAL-COSTS> 4,433 2,480 645
<OTHER-EXPENSES> 14,598 11,338 4,688
<LOSS-PROVISION> 27 27 0
<INTEREST-EXPENSE> 185 (120) 172
<INCOME-PRETAX> (11,228) (10,850) (5,517)
<INCOME-TAX> 0 0 0
<INCOME-CONTINUING> (11,228) (10,850) (5,517)
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> (11,228) (10,850) (5,517)
<EPS-BASIC> (3.48) (4.48) (4.19)
<EPS-DILUTED> (3.48) (4.48) (4.19)
</TABLE>