<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> MAR-31-1999
<CASH> 33,425
<SECURITIES> 157,664
<RECEIVABLES> 4,176
<ALLOWANCES> 619
<INVENTORY> 0
<CURRENT-ASSETS> 199,127
<PP&E> 6,561
<DEPRECIATION> 1,561
<TOTAL-ASSETS> 125,441
<CURRENT-LIABILITIES> 8,015
<BONDS> 0
0
0
<COMMON> 18
<OTHER-SE> 116,327
<TOTAL-LIABILITY-AND-EQUITY> 125,441
<SALES> 0
<TOTAL-REVENUES> 5,259
<CGS> 0
<TOTAL-COSTS> 1,309
<OTHER-EXPENSES> 10,853
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (5,637)
<INCOME-TAX> 0
<INCOME-CONTINUING> (5,637)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (5,637)
<EPS-BASIC> (.03)
<EPS-DILUTED> (.03)
</TABLE>