[INTERNET] Problem with all Torrents Programs

Hello there lads, I am facing one problem for a while, actually when it happens I reinstall windows, but now I have many important stuff on my PC.

The problem is the following:

I use the mozilla firefox and uTorrent and yahoo messenger, limewire all at once working perfectly on my PC. Until a few days. A few days ago my uTorrent started to act crazy. When I start the uTorrent, all my internet applications freeze. (including uTorrent). I close uTorrent but the applications still remains freezed. Actually when I open uTorrent seems to CUT the internet connection. (despise that the diagnose of windows says that it's nothing wrong with it). I need to restart the computer to reestablish my internet connection. (disabling/activating the connection doesn't do the trick, reset is obligatory).

Now I am using windows vista home premium 32bit.

Other times when this problem occurred I had windows XP sp2.

The ONLY time when this DOESN'T occurs is when I used windows XP with no SP, but using windows XP with no SP, I can't play no game, most of them require sp2, ageia and latest drivers.

So any1 has this problem too?? How it can be resolve without reinstalling windows every week?

Many thanks in advice Alex.

My guess is that this problem appear because of a "legal" virus, and the anti-virus programs didn't detect it because it's "legal". I believe it's made by Microsoft to shut the torrents down once and for all. Still i don't have no evidence.. but after facing this problem a couple of times, without modifying nothing in Windows, uTorrent, etc ... the **** happens. Someone DOES something and it's not me

I await help, opinions, answers, anything who might have any idea of what happens here.. Please he is more then welcome to post it.. THANKS