Sounds like a bad Java install. Uninstall java and uninstall LimeWire go to the link below and get java and save it to your hard drive go to the link below that and get LimeWire and save it to your hard drive.
Do not use the on line installers do it manually by clicking on the files you saved to your hard drive Java first then LimeWire.
http://www.gnutellaforums.com/showth...threadid=36420 http://www.limewire.com/english/content/download.shtml
This should help let us know if it fixes your problem.