Internet Speeds Suddenly Slowed Severely

I'm currently in a University dorm room connected, via ethernet, to a splitter in our room. Starting just yesterday, my usually amazing internet speeds tanked to about 8 kb/s, and have stayed there since then. My roommate, also using ethernet, is having no problems.You'll have to excuse my lack of knowledge on this subject, I just hope I'm not completely clueless:

I first did the obvious checks, made sure cables were connected and secure, restarted our splitter as well as my desktop, disconnected and reconnected to the University Network, I even attempted to connect to wireless to make sure the problem still existed, and it did. ~8 KB/s download speed.I made sure I have, to the best of my knowledge, no background programs running that may be stealing bandwidth.I checked to make sure it wasn't only affecting my preferred internet browser, and programs like IE and Firefox showed similar, if not worse, results.I tried recovering to a few days ago when I believe the problem didn't exist, and the problem still existed.I ran through my programs list and made sure nothing was installed recently that could hinder performance.I ran a complete scan through McAfee, which produced no results.To double check, I downloaded (slowly) and ran SpyBot, which produced a few errors, but I quickly "fix"ed them and restarted my computer, ran another scan, and now nothing.