Try deleting your LW Preferences folder whilst LW is closed; instructions here: Point #3 in Fixes for Limewire (sample image included at bottom of page.) If using Vista then see http://www.gnutellaforums.com/genera...der-vista.html

BTW the offline installer is here: http://www9.limewire.com/download/LimeWireWin-full.exe

It might also be wise to clean your system up using Crap Cleaner which is highly recommended at most 'respected' technical forums.