Have a look at this thread .
http://www.gnutellaforums.com/showth...threadid=36420
It is likely you have a problem with Java or your preference folder. The Preference folder should be deleted with Limewire Fully closed and the Java and Limewire insatallations are best done with the off line installers. ... Installing Java, before installing Limewire
Please let us know if this helps.