We are running UG/NX through Teamcenter, the main problem is opening existing files and doing a save as to a new item or a new revision, this however is not consistant on some files it works fine on others it hangs up. It just shows the windows icon spinning but nothing happens, and we end up having to use ctl-alt-del to open task manager and it shows "NX not responding", so we kill that session and then we have to do the same with Teamcenter. We then reboot our system and when you open that component, it shows that a dataset was created but there is nothing there.