Running two or more firewall programs at the same time can cause a conflict. Disable your windows firewall. In Limewire Links (below) click on (If LW will not connect) and go through these fixes -- Try one fix at a time --- do them in this order:-
1. Check your firewall. *(see link below)
2. Delete/Replace gnutella.net file
3. Delete Limewire Folder (otherwise known as the preference folder)
4. Update java
5. Change listening port
6. Go through the rest of the fixes.
*See
this link reyr vista/mcafee configuration