Subject IB_Events, Windows NT 4.0 and TCP/IP

I have for several days been trying to get IB_Events and TCP/IP
working on a Windows NT 4.0 network.

Everythings works fine, until I try to close the IBOdatabase where
the IB_Events are registered. The program grabs all the the CPU power
it can get for 20 - 200 seconds and then terminates nicely without
any errors.

I use Service pack 4 on both Workstation and Server, which should
include the Hotfix mentioned in the IBO Help file.

I am forced to go back to NetBEUI, which works alright, except from
writing an End Of File in the Interbase log file, evertime you drop
a connection.

Any info available !

Best regards Preben.