If you click on the link in my last post, you'll see another link which shows the system details that we need

Did you have any trouble finding the preferences folder, to replace your gnutella.net file? Did you make sure that LW was properly closed before replacing gnutella.net?

When you deleted the preferences folder, did you also look for a folder (.limewire) in the old location? Was LW properly closed when deleting the preferences folder(s)? When you restarted LW, did it take you through the setup wizard again?