1. Go to Add/Remove Programs control panel & uninstall all Java versions. Then reinstall using the "Offline" Java installer 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. Reinstall LW using the "Offline" installer version from here:
http://www.limewire.com/english/content/download.shtml The installer will remove any previous copies or versions of LW at the beginning of the installation process.
Good luck!