IBM DB2 for Windows (98/NT/2000) run 2 services : db2ccs.exe (listening on port 6790) and db2jds.exe (port 6789). I may be wrong but these services are used to access data remotely and to remotely manage the database. Both can be crashed remotely: just telnet on their port, send one byte and then close the connexion, that's all. IBM is aware of that. They reproduced the problem and say that a patch will be availlable in july (so this month) for version 7 and above. Regards, Gilles