Problems with netwok drives...

I have just reformatted a pc and installed XP Pro SP2, this PC is on a network with a domain controller and also running active directory. My Problem: All users on the network have a network share for their own file storage. Well it never fails that this particular share always says it is disconnected when you log off and login as another user. After multiple users have logged in and out, there are multiple "disconnected network drives" listed in my computer for anyone who logs into this pc. I seem to only be having this problem with this pc. I have never seen this before and cannot seem to locate anything in MS's knowledge base. Any help would be greatly appreciated!

David