[katnapz]

Yes, Comcast started this some time back.
I'm using the latest BitTornado with encryption and haven't had any problems. The only thing you have to realize is that depending on how you configure whatever torrent program you use, you may end up only being able to see others who use encryption....so on the website you may see 20 other seeders/leechers, but in your program you'll only see the ones using encryption....you'll have to play with it to see what you want. Haven't had any issues tho as far as seeding once I have a torrent completed since I did the upgrade.
Also remember to change the default torrent ports. Those are definately being monitored/blocked by a lot of ISP's anymore.

Good luck.