This is really weird.

I have a PC running Windows 98 and it runs great. No problems whatsoever, except when shutting down, I get an explorer error. I booted up in normal mode to see what was running in the background, and amazingly, explorer is not in there. The only things running are: navapw32, systray, and rnaapp. When booting in safe mode, nothing is running in the background. I've checked google & microsoft's knowledge base with no real answers. The exact error message is:

This program has performed an illegal operation.
Explorer caused an invalid page fault in module <unknown> at 0000:10031BDA

Any help would be greatly appreciated.