Two things...

First, I'm relatively certain this isn't an issue with upload speed necessarily, but rather, something strange is causing a very long timeout on each packet being sent in the upload.

Did you recently make any changes to the network settings of the PC (or run a utility that made changes for you) for the purposes of speeding up online DOOM games? I've heard of people who do those kind of tweaks having the kind of troubles you're describing.

Second, I think it's just awesome to see someone your age using phrases like "WTF".