I would recommend turning System start up off. I don't think that's a good option personally to have LW starting up when your system is still loading.

Try this in this order:

1. Remove all Java versions using your add/remove control panel. Reinstall using only the OFFLINE installer: Download Java software from Sun Microsystems

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.)
If using VISTA, see http://www.gnutellaforums.com/genera...der-vista.html

3. Download & install this version of LW (no need to uninstall previous version): http://www9.limewire.com/download/LimeWireWin-full.exe