Occasionally, on a Win98SE machine after logging into a Novell and NT network, Windows fails to completely boot to the desktop and stalls. When I hit ctr/alt/del it tells me that mprexe is "not responding". I went to the Microsoft database and found only information about page faults it may cause. I ran a patch it suggested but it didn't cure the problem. Anyone else have any ideas?

Sounds like a viruse!!!! Run a virus check on your system

http://support.microsoft.com/support/kb/articles/Q234/6/47.ASP

MPREXE.exe is not a virus, it sounds like you must have some configuration problems, or a corrupted file, or something that should load that is having troubles loading. I am not real good with troubleshooting, but I suggest running a bootlog at bootup and look at the report to see what fails to load successfully. MS Support Knowledge Base has an article that helps you to read the bootlog I believe. Here is the Windows 98 Resource Kit Tools report about the file: "file size: 28672, local destination: Windir\system, cab file (cd-rom): win98_41.cab, cab file (on diskette): win98_36.cab (disc 31), File Description: Windows 98 Multiple Provider Manager. This file helps determine where network requests are sent when more than one redirector exists on the computer in Windows 98."

Might be the bymer virus. Run a search at www.google.com for more info.

It is more than likely a corrupted password list. Search for *.pwl and delete them. This should cure your problem.