A wire...
I was wondering through all this what type of connection you had as well, but I didn't mean physically
How do you connect, or rather, how do you authenticate yourself on the network? Is this software driven, a DSL Modem, a Cable modem, a hub in the middle of the room... Do you have a cat5 cable plugged directly into the wall?
There HAVE to be some geeks on campus that have run into similar problems running linux, or if not, it could very well likely be hardware based issues, however I find that quite odd... Not that a new NIC could cost all that much, I recently got a 10/100 Netgear, powered by a Tulip module for less than 20 bucks; but rather that it's odd that it would be only fished out in Linux.
It's certainly worth it to try another LIVE Distro, such as Knoppix which will autodetect everything for you, to see what kind of throughput you get there.
Cool