"In its ongoing war against BitTorrent, Canadian ISP Rogers decided to throttle all encrypted traffic. ISPs and BitTorrent client developers are playing an ongoing cat-and-mouse game, but Rogers really crosses the line here. A very bold move, to say the least, which affects not only BitTorrent users, but everyone who is using encrypted transfers."
This one goes to you Canadians apparently. The Canadian-based ISP, Rogers, was one of the leading ISPs that attempted to limit their bandwidth usage by stifling Bittorrent (BT) traffic. This in-turn, of course, led to popular BT clients such as uTorrent or Azureus to add the feature known as encryption to bypass any attempt to hamber BT traffic.
According to a TorrentFreak article posted by Ernesto, Rogers has finally caught up to the fact that Peer-to-Peer users have adapted their software to include encryption to send their data faster. In response, ALL encrypted connections have been throttled, which in turn is hampering other encrypted services such as email. View the source article for more information. - hairbautt