(A) Go here:
http://www3.limewire.com:6346/ (it should say test page was a success.) And tell us what happens.
(B) Have you configured your firewalls to allow both LW & Java full access? Instructions:
http://www.limewire.com/english/content/firewalls.shtml
Try these things:
1. Repair LimeWire using the Add/Remove Programs utility. Go to Control Panel then Add/Remove Programs & click on Limewire on the Change/Remove button & it comes up with options and one of them is Repair. Try this.
2. Right-clicking the Limewire icon and going to properties and changed compatability setting to Windows 2000.
3. Right-click on the Limewire icon on the desktop and click on Run as. Then it should come up showing the current user and then switch it over to Administrator.
4. Delete the LW Preferences folder called
.limewire (whilst LW is closed!)