1. Uninstall your Java using your add/remove control panel. Then reinstall ...
Java 1.5 (take the JRE) "Offline" version only which is about a 16 MB download.
2. Delete your LW Preferences folder whilst LW is
closed; instructions here:
Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)
3. Reinstall LW using the "Offline" version which is not the prefered version from here
http://www.limewire.com/english/content/download.shtml
4. Try changing compatibility mode to either windows 2000 or NT;
Point #5 in Fixes for Limewire