<ARTICLE> 5
<LEGEND>
THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AT JUNE 30, 1997 AND THE RELATED CONSOLIDATED
STATEMENT OF OPERATIONS FOR THE THREE MONTHS IN THE PERIOD ENDED JUNE 30, 1997
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          12,393
<SECURITIES>                                    10,802
<RECEIVABLES>                                   10,883
<ALLOWANCES>                                     2,035
<INVENTORY>                                          0
<CURRENT-ASSETS>                                34,244
<PP&E>                                           7,053
<DEPRECIATION>                                   4,138
<TOTAL-ASSETS>                                  37,459
<CURRENT-LIABILITIES>                            9,576
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        39,096
<OTHER-SE>                                    (11,369)
<TOTAL-LIABILITY-AND-EQUITY>                    37,459
<SALES>                                          5,355
<TOTAL-REVENUES>                                 5,355
<CGS>                                              505
<TOTAL-COSTS>                                    1,220
<OTHER-EXPENSES>                                 6,753
<LOSS-PROVISION>                                   111 
<INTEREST-EXPENSE>                               (306)
<INCOME-PRETAX>                                (2,240)
<INCOME-TAX>                                        11
<INCOME-CONTINUING>                            (2,251)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (2,251)
<EPS-PRIMARY>                                    (.24)
<EPS-DILUTED>                                    (.24)