Sounds like the same problem I had. See here:

http://www.gnutellaforums.com/showth...threadid=23999

I didn't have any trouble with the previous version I was using but I didn't see a way to choose an older version of Limewire on the web site. So, currently I've deleted all files/folders for Limewire and Limeshop and am actually using my work computer to do work (mostly)!