My firebird stops sometimes, with the next error (copied from the
firebird.log):
"
AKHSQL (Server) Tue Jan 10 09:33:28 2006
INET/select_wait: select failed, errno = 0

AKHSQL (Server) Tue Jan 10 09:33:28 2006
SRVR_multi_thread/RECEIVE: error on main_port, shutting down

AKHSQL (Server) Tue Jan 10 09:47:56 2006
Shutting down the Firebird service with 42 active connection
(s) to 1 database(s)

AKHSQL (Client) Tue Jan 10 09:47:56 2006
C:\Program Files\Firebird\Firebird_1_5\bin\fbserver.exe:
normal shutdown

AKHSQL (Server) Tue Jan 10 09:47:56 2006
The database D:\ALFA\TIR\DAT\F2005\F2005.GDB was being
accessed when the server was shutdown

AKHSQL (Client) Tue Jan 10 09:47:56 2006
Control services error 1061

AKHSQL (Client) Tue Jan 10 09:47:57 2006
Guardian starting: C:\Program Files\Firebird\Firebird_1_5
\bin\fbserver.exe

"

I restart firebird guardian and everything works fine. It happens
mostly once a day, when many user use the server the same time. I
don't know what might be the reason, what routins are causing this.
Can it happen when two or more user use the same part of the program?
Maybe an error in the udf?

If someone needs the udf or the configuration, i can send it in
private mail.