If you have both the .limewire and the LimeWire folders delete both...
Lotr has explained where to find these in this sticky...
http://www.gnutellaforums.com/window...ng-should.html
Hopefully this will get you into Limewire and have it stop freezing....
Otherwise if this does not work, try to remember what the file/s where that may of caused this to happen and enter the title of it/them into your computers search function and try deleting them that way...