1. Uninstall your Java using your Add/Remove control panel. Then reinstall using the "Offline" installer version here
Java 1.5 (take the JRE)
2. Try deleting your LW Preferences folder whilst LW is
closed; instructions here:
Point #2 & 3 in Fixes for Limewire (sample image included.)
3. Downld the "Offline" LW installer version from here
http://www.limewire.com/english/content/download.shtml & at the beginning of installation it will uninstall the previous version.