Ask for the netadmin to change your IP. Those connection requests would stop if they were blocked at a point earlier than your dorm or if you shared the files requested. The first option needs to be done by the netadmin and you can't do the second one because then you would be a server.

You could even stop running LimeWire and the firewall would still see many of the connection requests. The netadmin needs to change your IP and deny the old IP from connecting at their firewall.