There's 2 possible reasons I can think of why LW was continually starting up. The most likely cause was a common gnutella virus. I'd recommend signing up to norbie's site & follow his instructions to be sure you don't still have any remnants of the virus or its damage: NorbiesWorld (click on link)

After Norbie has seen your problem & responded, reinstall LW & Java & delete your LW prefs folder as described in steps 1-3 here (if still problems see step 5): Fixes for Limewire