Network mappings suddenly dropping

We are running Windows 2000 Servers all at the current Service Pack levels. Our end users are working on pc’s running operating system levels ranging from Win 95/98, NT, 2000 and XP.

I’m having a problem with the Windows 95 pc’s losing their mapped drive settings. I can remap the drive and it’ll keep. This issues isn’t happening with one user but several of our Windows 95 users. Also, it doesn’t happen all the time. I won’t run into this issue for a couple of months and then it’ll unexpectedly show up.

Any ideas or suggestions?

Thanks.