May I suggest you uninstall Java using the Add/remove programs control panel. Then downld the Java installer & save it to your computer (DON'T install over the net) & then install it. Get a link for the Java installer from here:
Fixes for Limewire It might be an idea to do the same thing with LW if this doesn't fix it. But go to the Start menu>Programs>LW>Uninstall to remove LW. Installing over the net can sometimes cause issues.