That is strange.
Only when I connected through an international proxy did I get full torrent speeds as well as more stable pings in WoW.
I remember reading that Sentech stated in the Broadband Shootout that they don't shape any traffic, but my test results show otherwise.
Odd. I know for a fact they don't shape traffic. Consider though, that the same might not be true for ALL of their upstream providers, e.g. UUNet, MCI, or the rest.