I have a workstation which suddenly hangs the applications working over shared resources. But not for other TCP connections.
For instance, I open windows explorer and browse on Z:\documents. Also I open a terminal server connection. The first one hangs and the second one works perfectly.
This only happens on that workstation but not on any other on the company. I'm discarded the antivirus because I've disabled it.
UPDATE1: @Jay, It hangs after browse or while using another software using shared folders.
UPDATE2: @Russ, There is no firewall more than the windows firewall and it's exactly the same that the other workstations.