yeah, my university completely blocked those things in the dorms for a while, but then they realized that it was futile and they basically stuck us with the threat: If we catch you utilizing über bandwidth (esp. upload), you'll have your connection shut down. So those of us who could selectively use P2P got what we needed, and the University limited bandwidth consumption. I thought that it was an intelligent compromise

They really couldn't shut down the ports, because there is so much experimentation and collaboration between our university and others around the world, and chances are that if they limited any ports then it would cut off some prof's connection to his colleagues or something.