Particular Network Account User - "Server Connection Interrupted"

Community,

One of my employees is reaching a pretty strange error. We use an OS X Server (Mountain Lion, latest updates as of this writing), with various Mountain Lion/Lion end users.

One of the users keeps getting a "server communications Interuppted" error about 5 - 10 minutes after login. The 'Spinning rainbow wheel of death' shows up, and everything is locked up.

Whats strange is that this is not restricted to a single access point. On other machines, this user encounters the same error, when other user accounts function properly.

I've tried reconfiguring the account via Workgroup Manager AND Server.app, but neither have helped.

Anyone have any pointers, or ideas on how to better troubleshoot this? How can a single user continue to prove corrupt in regard to server connections?

Thanks,

Charlie