Intermittentconnectivity in Novell 5.0.

I have a Novell 5.0 server and several Win98 workstations using Novell Client32. My own machine dual boots in Win 98 or Win 2K Pro.
All of the Win98 machines and my own when booted in Win98 will lose connection to the server from time to time. Ifleft alone for 5 minutes or so, the connection is re-established. If the machines are rebooted, the connection is re-established.
However, my machine when booted in Win2K Pro has no such problem.