lol i got rid of mcafee becaus mine seemed to have a problem with winmx ...... that said others run it with no problems
perhaps a check of your router settings might help as it is real easy to overlook something when doing so....this can be done via the link below
http://www.portforward.com/but from what you have posted i still think it could be a problem with your isp and packet shaping or blocking using anti p2p technology as seems to be a big problem these days
something i did notice from checking out your isp was that they opperate a Misuse of Content and Copyrighted Materials policy
Qwest has designated an agent to receive notifications of alleged copyright infringement under the Digital Millennium Copyright Act (DMCA). If you would like to file a DMCA notification, please complete and submit a DMCA Infringement Notification Form. Subscribers who feel that a DMCA infringement notification was filed in connection with their account in error may complete and submit a DMCA Infringement Counter Notification Form. The completed forms will automatically be sent to the designated agent.
Qwest handles all DMCA notifications it receives in accordance with its established procedures. Given the large volume of such notifications it processes, Qwest does not respond to status inquiries made in connection with any individual notification or series of notifications.
so this leads me to believe they would be using all they can to block p2p also as standard policy & to cover there own backs