Just a suggestion from another thread..

I found that if I have anything at all opened BEFORE Limewire, I can't get beyond a poor connection. If Limewire is the first thing I start up off my desktop after a reboot, then I go to Turbo almost instantly.

I had IE open and was browsing all day, closed it and opened LW - nothing. So I rebooted and when my start screen came up, opened LW first, then IE and all was perfectly fine.

Just another thing to give a try.