[RESOLVED] Win98 hangs on shutdown screen

I have a colleague who has a Dell Optiplex GX1 400 PII.../w Win98 installed (it's also on a network). When he shuts down every evening the computer hangs at the Shutdown screen. It means that every time he reboots he has to go through Scandisk because Windows does not shut down properly. Is there a way to stop this from happening??

Check here first:
http://members.xoom.com/Khephra/a_shtdwn.htm
In my case the problem was NAV 5.0

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