If you are using a non standard skin this can happen. Try reverting to the default skin if applicable.
If you do any gaming on your computer and have altered or added graphics cards for this, it might cause problems.
Also You may be able to cure this by deleting your Limewire Preference folder. You MUST do this with limewire FULLY closed. This link will help you to delete the preference folder if you need to. You will need to reconfigure Limewire if you do this. :-
http://www.gnutellaforums.com/showth...=fixes+working
I hope some of this helps