Ive used torrents for ages, and never had a problem with the clients, but I went round to my mates today to install a client and show him how to use torrents etc...............but the computer kept randomly freezing up. I got rid of some spyware, was no viruss etc, and tured zonealarm off, but to still no joy.

Any ideas?? I tried running BitComet and Microtorrent but they both did it.