You're probably behind a campus firewall that's configured in some screwy way, or your OIT (Office of Information Technology) has decided to block commonly used peer-to-peer ports (in the 6999 range) in an attempt to save bandwidth. Heaven knows OIT people love to have towers of unused bandwidth.
"Check it out, Bob. We're running a T3 line, and with the new port blocking, it's only pulling 26kbps."
"You know, Phil, you're a real jerk."
As far as I know, there is no solution to this problem short of getting your internet elsewhere. If there is, I'd love to hear it. I haven't been able to use bittorrent in months because of this. Heck, my campus just recently started blocking port 6667, claiming that IRC was tying up 30% of their bandwidth usage. I'd believe it if DCC transfers didn't take place on random ports.