<ARTICLE> 5 <LEGEND> THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONSOLIDATED BALANCE SHEETS AS OF DECEMBER 31, 1997, SEPTEMBER 30, 1997, JUNE 30, 1997 AND MARCH 31, 1997 AND THE RELATED CONSOLIDATED STATEMENTS OF OPERATIONS FOR THE TWELVE MONTHS IN THE PERIOD ENDED DECEMBER 31, 1997, NINE MONTHS IN THE PERIOD ENDED SEPTEMBER 30, 1997, SIX MONTHS IN THE PERIOD ENDED JUNE 30, 1997 AND THREE MONTHS IN THE PERIOD ENDED MARCH 30, 1997 AND ARE QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. SECTION XI.B.4.b REQUIRES RETROACTIVE RESTATEMENT OF PREVIOUSLY FILED FINANCIAL DATA SCHEDULES AS A RESULT OF SFAS No. 128, EARNINGS PER SHARE. </LEGEND> <RESTATED> <PERIOD-TYPE> 12-MOS 9-MOS 6-MOS 3-MOS <FISCAL-YEAR-END> DEC-31-1997 DEC-31-1997 DEC-31-1997 DEC-31-1997 <PERIOD-END> DEC-31-1997 SEP-30-1997 JUN-30-1997 MAR-30-1997 <CASH> 10,784 10,322 12,393 8,397 <SECURITIES> 9,677 10,693 10,802 15,505 <RECEIVABLES> 10,609 10,755 10,943 10,719 <ALLOWANCES> 1,509 1,972 2,035 2,112 <INVENTORY> 0 0 0 0 <CURRENT-ASSETS> 31,554 31,660 34,244 34,500 <PP&E> 7,056 7,040 7,053 6,972 <DEPRECIATION> 4,651 4,382 4,137 3,941 <TOTAL-ASSETS> 34,223 34,605 37,459 37,857 <CURRENT-LIABILITIES> 8,406 7,528 9,576 7,756 <BONDS> 0 0 0 0 <PREFERRED-MANDATORY> 0 0 0 0 <PREFERRED> 0 0 0 0 <COMMON> 39,359 39,258 39,096 39,082 <OTHER-SE> (13,675) (12,325) (11,369) (9,150) <TOTAL-LIABILITY-AND-EQUITY> 34,223 34,605 37,459 37,857 <SALES> 22,018 15,376 9,189 3,834 <TOTAL-REVENUES> 22,018 15,376 9,189 3,834 <CGS> 2,863 1,743 935 430 <TOTAL-COSTS> 5,667 3,769 2,208 988 <OTHER-EXPENSES> 25,419 19,013 13,114 6,361 <LOSS-PROVISION> 382 251 218 107 <INTEREST-EXPENSE> (1,170) (893) (616) (308) <INCOME-PRETAX> (7,859) (6,420) (5,408) (3,169) <INCOME-TAX> 45 22 19 8 <INCOME-CONTINUING> (7,904) (6,442) (5,427) (3,177) <DISCONTINUED> 0 0 0 0 <EXTRAORDINARY> 0 0 0 0 <CHANGES> 0 0 0 0 <NET-INCOME> (7,904) (6,442) (5,427) (3,177) <EPS-PRIMARY> (0.83) (0.69) (0.58) (0.34) <EPS-DILUTED> (0.83) (0.69) (0.58) (0.34)