Go here
http://www.microsoft.com/technet/sys...s/default.mspx and download sysinernal's process explorer, gives a much better overview of what your programmes are doing than "task manager, and you can set it to load when you use the 3 fingered salute.
I had severe problems with running peer to peer stuff from both Channel4 and the BBC as McAfee opened a copy of one of it's files for each of the download threads and scaned each one as it arrived
