I hate to be the bringer of bad news, but I've tried several times with the same result each time... It works beautifully like a charm.
My up speed is a little low compared to normal, but speed wise I seem to be fine other than that as well.
Perhaps someone at TSI may have an explanation for why this is? From the look of this thread, both cable and DSL users alike are having this issue, but I am unable to replicate this problem no matter how hard I try.