Just an update for anyone on Comcast.
The FCC has ruled that Comcast's use of Sandvine for torrent throttling (RST packets) is illegal, and at the beginning of August gave Comcast 30 days to remove Sandvine. So by the end of the month (if not already) Comcast users should no longer have any problems seeding torrents.
Instead, Comcast is planning on a different throttling method that will slow down the top 10% bandwidth hogs to "DSL speeds" for 10-20 minutes at a time (which will still be enough for fast web browsing), but your torrents and other downloads will still go through fine.
Other people can check if their ISP has been known to throttle torrents, and what (if any) workarounds are available:
http://www.azureuswiki.com/index.php/Bad_ISPs
Or you can use this tool to check if you're specific IP is actually being throttled:
http://broadband.mpi-sws.mpg.de/transparency/bttest.php
Banzai! ヽ( ・∀・)ノ