IT Employment

Ok folks. I've been a Network Administrator for 12 years now and this is the first time I've had trouble getting a PC to join a Domain. The Client is running WinXP Pro SP1 and patched to the fullest extent available fom Microsoft Update. However, when I try to add my XP client into the Windows 2000 Domain it returns the following error:

The following error occurred attempting to join the domain "ICS":
Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all revious connections to the server or shared resource and try again.

This makes no sense to me because I have no connections to the server and this is the first time I've ever tried to add this PC into the domain. Anyone have any ideas?

Thanks