---In firebird-support@yahoogroups.com, <konf@...> wrote :

Hello FireBird Support!

Some customers are having troubles which causes %subject% error
messages.

I think it can be a problem with UDF, but I cannot prove if it is
right.

Firebird.log file shows only lines with 10054 and nothing else.

How can I find out the reason why a user is kicked off from
connection?

Apart of network issues - check if server process was crashed\restarted
It should be logged at Events Log

Regards,
Vlad