Windows update causes forced disconnection after installing Windows update on task bar while tethering using PC Suite and N900.

Does not tell you it has denied your connection. It gives no alert or message but no web page will load, videos stop buffering, every web page stops in Firefox browser.
No explanation is given. You are forced to disconnect and re-connect losing any buffer you had on movies and you have to start over and after 3 times of this happening I have now had to run defragmenter just to get tethering smooth again.
Can someone confirm this? I am on T-mobile service tethering.