Try these suggestions: HERE

By the way who is your ISP provider? A common thread here is some isp's block or filter p2p or specifically LW. Sounds familiar side-fx/symptoms. A recent one to light is Insight. People in the windows section have been having the same problem with Insight. 'IF' this is the case, have a look at the Sticky called "IMPORTANT!!! A Fix for those whose ISP's block Limewire" in the connections section of the forum.