<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                          14,701
<SECURITIES>                                    14,829<F1>
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                30,753
<PP&E>                                          13,538
<DEPRECIATION>                                   7,073
<TOTAL-ASSETS>                                  40,507
<CURRENT-LIABILITIES>                            7,736
<BONDS>                                              0
                                0
                                          0
<COMMON>                                            26
<OTHER-SE>                                     (4,423)
<TOTAL-LIABILITY-AND-EQUITY>                    40,507
<SALES>                                              0
<TOTAL-REVENUES>                                 1,038
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                12,523
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 785
<INCOME-PRETAX>                               (12,270)
<INCOME-TAX>                                       100
<INCOME-CONTINUING>                           (12,370)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (12,370)
<EPS-BASIC>                                     (0.48)
<EPS-DILUTED>                                   (0.48)
<FN>
<F1>THIS AMOUNT REPRESENTS SHORT-TERM INVESTMENTS HELD BY THE COMPANY AT 6-30-2000.
</FN>


</TABLE>



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