OK... I see McAfee as being part of your problem...
Have a look at this thread and the links I have provided in the second post, these links are how some members fixed their McAfee issues...
http://www.gnutellaforums.com/genera...onnection.html
If you still cannot connect after that, I can get the port forwarding instructions you need for your router...
And there maybe a few more fixes we can try...
But McAfee is a major contributor....
Also your ISP shapes...