<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS AS OF DECEMBER 31, 1998, SEPTEMBER 30, 1998, JUNE
30, 1998 AND MARCH 31, 1998 AND THE RELATED CONSOLIDATED STATEMENTS OF
OPERATIONS FOR THE TWELVE MONTHS IN THE PERIOD ENDED DECEMBER 31, 1998, NINE
MONTHS IN THE PERIOD ENDED SEPTEMBER 30, 1998, SIX MONTHS IN THE PERIOD ENDED
JUNE 30, 1998 AND THREE MONTHS IN THE PERIOD ENDED MARCH 30, 1998 AND ARE
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
                                                                                                       
<PERIOD-TYPE>                                12-MOS                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998             DEC-31-1998             DEC-31-1998
<PERIOD-END>                               DEC-31-1998             SEP-30-1998             JUN-30-1998             MAR-30-1998
<CASH>                                           9,656                   8,834                   7,326                   8,048
<SECURITIES>                                     9,456                   8,396                  11,925                  10,806
<RECEIVABLES>                                   11,035                  13,640                   9,877                  10,612
<ALLOWANCES>                                     2,135                   2,125                   1,700                   1,686
<INVENTORY>                                          0                       0                       0                       0
<CURRENT-ASSETS>                                29,817                  32,220                  30,564                  30,526
<PP&E>                                           8,762                   8,477                   7,165                   6,933
<DEPRECIATION>                                   6,382                   6,126                   5,071                   4,725
<TOTAL-ASSETS>                                  33,125                  35,738                  32,967                  32,973
<CURRENT-LIABILITIES>                           13,214                  14,261                   9,395                   8,990
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                        39,758                  39,638                  39,637                  39,415
<OTHER-SE>                                    (19,993)                (18,383)                (16,181)                (15,552)
<TOTAL-LIABILITY-AND-EQUITY>                    33,125                  35,738                  32,967                  32,973
<SALES>                                         23,279                  16,358                  11,098                   5,047
<TOTAL-REVENUES>                                23,279                  16,358                  11,098                   5,047
<CGS>                                            2,787                   1,746                   1,237                     545
<TOTAL-COSTS>                                    7,858                   5,118                   3,091                   1,466
<OTHER-EXPENSES>                                22,579                  16,670                  11,114                   5,826
<LOSS-PROVISION>                                   341                     243                     177                     146
<INTEREST-EXPENSE>                             (1,008)                   (784)                   (571)                   (311)
<INCOME-PRETAX>                                (5,909)                 (4,345)                 (2,613)                 (2,097)
<INCOME-TAX>                                       237                     114                      37                      17
<INCOME-CONTINUING>                            (6,146)                 (4,459)                 (2,650)                 (2,114)
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                   (6,165)                 (4,478)                 (2,650)                 (2,114)
<EPS-PRIMARY>                                    (.63)                   (.46)                   (.27)                   (.22)
<EPS-DILUTED>                                    (.63)                   (.46)                   (.27)                   (.22)