Hi gwargo,

It sounds like Comcast are throttling uploads. Downloads...I'm not so sure. They don't seem to be actually blocking p2p either, here are a few things to read

http://www.gnutellaforums.com/downlo...ease-help.html

Comcast is using Sandvine to manage P2P Connections - dslreports.com

Compiler - Wired Blogs

Please post your system details. I'm not a Mac user, but your details will help somebody else to help you.
System details - help us to help you (click here)

I'll move this all into the Mac support section & add it to your existing thread there