I had a problem with utorrent and basically every other software out there that heavily uses the bandwidth. Basically what happened was that each time I tried to download something my wireless connection turned to limited connectivity. I know Vista has been having problems with some wireless and LAN connections, so I decided I need to find a solution.

After two hours of looking into network, router, adapter configurations, countless resetting, restarting updating the firmware, the answer was finally there for me and can be for you as well - certainly won't hurt to try.

And it is as simple as...

Disable NetBIOS (it's on default as a standard)

voila everything works perfect now