Hi Dany

I also thought that the problem would be gone after reading the
Firebird 1.5.3 Release notes! :-(

That the Debugger stops in ntdll.dll is just annoying but I can live
with it. Our problem is that when the Access violation in fbclient.dll
occurs our application hangs during shutdown ! The user has to kill our
application with the task manager because we use an Mutex in order that
just one instance of our application can run at once.

I'm thinking about not to close the Database connection during
application shutdown but I don't know what kind of impact it might have
on the firebird server ?

Regards,
Stefan