Comcast is still interfering with BitTorrent traffic.
I went to http://broadband.mpi-sws.mpg.de/transparency/bttest.php today to see if Comcast was blocking BitTorrent. Sure enough, I get the warnings:

Is BitTorrent traffic on a well-known BitTorrent port (6881) throttled?
* 2 out of 2 BitTorrent transfers were interrupted while uploading (seeding) using forged TCP RST packets. It seems like your ISP hinders you from uploading BitTorrent traffic to our test server.
* The BitTorrent download worked. Our tool was successful in downloading data using the BitTorrent protocol.

Is BitTorrent traffic on a non-standard BitTorrent port (10009) throttled?
* 2 out of 2 BitTorrent transfers were interrupted while uploading (seeding) using forged TCP RST packets. It seems like your ISP hinders you from uploading BitTorrent traffic to our test server.
* The BitTorrent download worked. Our tool was successful in downloading data using the BitTorrent protocol.

Is TCP traffic on a well-known BitTorrent port (6881) throttled?
* There's no indication that your ISP rate limits all downloads at port 6881.
* There's no indication that your ISP rate limits all uploads at port 6881.

This is ridiculous. I thought Comcast was getting fined for this?

Here's a Linux firewall rule to get around the issue:
iptables -A INPUT -p tcp --dport 39984 --tcp-flags RST RST -j DROP

Unfortunately, the person on the other end of your connection has to be running the same rule.

Net Neutrality is designed to keep Comcast from being assholes like this. Support it with legislation if you can.