My suggestions:
1. Open your Add/Remove control panel & remove ALL versions of Java listed.
2. Downld & then install the "Offline" version of Java 1.5;
Java 1.5 (take the JRE)
3. Delete your LW preferences folder; instructions here:
Point #2 & 3 in Fixes for Limewire (sample image included.)
4. Reinstall LW using the "Offline" LW version found here
http://www.limewire.com/english/content/download.shtml (no need to uninstall LW as the installer will uninstall it at the beginning of installation!!!)