>Oh! Maybe I understood you incorrectly.
>Of course local session could be locked by a screen saver. Look at the Display Properties -> Screen Saver. There is the lock option there.
>
>However, locking is not a log out. The programs continue to work and the user can return to them by typing the password.
>Maybe there is also interactive log out policy there for Server.
>
>But the cause of the problem could be really disconnection from Microsoft networks server.

It seems that in the first instance, I was getting logged out. After changing the policy everything continues to work. I didn't realize it at first but it is the screen saver that locks the station now. So the difference is that before the policy change I was getting logged out, now it's just the screen saver.

You were right.

Thanks,