<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AS OF SEPTEMBER 30, 2000 AND CONSOLIDATED
STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED SEPTEMBER 30, 2000
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 2,126
<SECURITIES> 786
<RECEIVABLES> 3,064
<ALLOWANCES> 411
<INVENTORY> 77
<CURRENT-ASSETS> 6,145
<PP&E> 16,790
<DEPRECIATION> 6,075
<TOTAL-ASSETS> 17,904
<CURRENT-LIABILITIES> 4,309
<BONDS> 0
708
0
<COMMON> 41,780
<OTHER-SE> (34,318)
<TOTAL-LIABILITY-AND-EQUITY> 17,904
<SALES> 5,077
<TOTAL-REVENUES> 6,332
<CGS> 862
<TOTAL-COSTS> 1,448
<OTHER-EXPENSES> 8,650
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 284
<INCOME-PRETAX> (4,348)
<INCOME-TAX> 44
<INCOME-CONTINUING> (4,392)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (4,392)
<EPS-BASIC> (.28)
<EPS-DILUTED> (.28)
</TABLE>