You might try to delete your " .limewire " preference folder when LW is completely closed (i.e. also in the system tray). Though I'm not sure that this is the solution to your problem, this trick has already helped a lot of people to get rid of strange problems..
...look at point 2&3 in the following thread:
http://www.gnutellaforums.com/showth...threadid=36420 