Three months ended
                                                                                              March 31,
                                                                                       2000               2001
                                                                                     --------           --------
In thousands                                                                                 (unaudited)

Cash flows used in operating activities:
Net loss                                                                             $(36,890)          $(17,108)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation                                                                              737              1,655
Provision for doubtful accounts receivable                                                286                120
Loss on disposal of assets                                                                 --              1,769
Accretion of available-for-sale securities                                               (158)                (5)
Provision for inventory obsolescence                                                      110                 --
Non-cash compensation expense                                                           1,910              1,218
Impairment loss                                                                            --              1,122
Extraordinary gain                                                                         --               (901)
Changes in operating assets and liabilities:
   Accounts receivable                                                                 (1,165)            (1,366)
   Inventory                                                                              348                327
   Prepaid expenses and other current assets                                             (698)               276
   Other assets                                                                           340                797
   Accounts payable                                                                       334              2,591
   Accrued expenses                                                                    11,802             (1,861)
   Deferred revenue                                                                     2,047                (50)
                                                                                     --------           --------
      Net cash used in operating activities                                           (20,997)           (11,416)
                                                                                     --------           --------
Cash flows from investing activities:
Purchases of furniture and equipment                                                   (4,551)              (186)
Proceeds from sale of assets                                                               --              8,577
Purchases securities available-for-sale                                                (6,963)                --
Maturities of securities available-for-sale                                            24,715              6,000
                                                                                     --------           --------
      Net cash provided by investing activities                                        13,201             14,391
                                                                                     --------           --------
Cash flow from financing activities:

Repayments of capital lease obligation and notes payable                                  (33)              (371)
Proceeds from exercise of stock options                                                 1,665                 21
Notes payable to stockholders                                                            (390)               (49)
                                                                                     --------           --------
      Net cash provided by (used in) by financing activities                            1,242               (399)
                                                                                     --------           --------
Effect of exchange rate changes on cash                                                     3             (1,180)
                                                                                     --------           --------
Net increase (decrease) in cash and cash equivalents                                   (6,551)             1,396
Cash and cash equivalents, beginning of period                                         18,627              5,322
                                                                                     --------           --------
Cash and cash equivalents, end of period                                             $ 12,076           $  6,718
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