Trying to delete the LW preference folder might have an effect....
Read here on how to delete this folder (Point #2 & 3 in Fixes for Limewire)
http://www.gnutellaforums.com/showth...threadid=36420
Afterwards reboot your computer.
Besides, if you have a brick wall in front of the globe it might be advisable to portforward for your router, since some models aren't doing well with UPnP.
Follow the in link in this thread referring to portforwarding.....(connection problems -click first
http://www.gnutellaforums.com/showthread.php?t=51361 