<ARTICLE> 5 <RESTATED> <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> JUN-30-1997 <CASH> 4,164 <SECURITIES> 31,410 <RECEIVABLES> 4,410 <ALLOWANCES> (500) <INVENTORY> 0 <CURRENT-ASSETS> 39,912 <PP&E> 11,746 <DEPRECIATION> (4,914) <TOTAL-ASSETS> 59,499 <CURRENT-LIABILITIES> 20,645 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 73,971 <OTHER-SE> (40,003) <TOTAL-LIABILITY-AND-EQUITY> 59,499 <SALES> 14,026 <TOTAL-REVENUES> 14,026 <CGS> 2,830 <TOTAL-COSTS> 28,938 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 0 <INCOME-TAX> 0 <INCOME-CONTINUING> (16,962) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (16,962) <EPS-PRIMARY> (0.64) <EPS-DILUTED> (0.64)