Thank you, yes I was about to suggest removing all Java & re-installing until I read the bottom of your post.

Have you tried removing the LW preferences folder? instructions here: Point #3 (point#2 'might' apply in your case if you've never deleted your LW prefs previously) in Fixes for Limewire (sample image included at bottom of page.)

I'd also recommend Crap Cleaner as it 'might' be able to find things 'MS Install clean up' cannot find.