Win 98 SE Shutdown Failure

I have several machines with Win98 SE on a Novell network. There are various Novell Clients on the machines. Usually when trying to Shutdown, the machines get several errors that prevent shutdown. Usually the errors are related to a program that Windows is trying to shutdown. Alot of the time the errors cause an invalid page fault in Kernel32.dll. I think it is from the Novell Clients. Any suggestions?