Axapta takes all CPU

Hi, I have problems with an axapta installation on a Windows 2000 File/print server (for program start), and another box running SQL 2000 with the database. Randomly users get only a “OK” box on the screen, and often the CPU for that users goes to 100%. Only way to get around this is to kill processes, or restart the computer. This is worse then running on Terminal Server, since this will affect all users on that box… Any ide`s about locking / file / open / closing problems on Axapta? or that to fix? No logging or anything shows up in event log, or trace-software… Rune