It is possible to disable firewalls .. turn them off. For Windows firewall ... go to the control panel, double click on Windows Firewall, check the disable box. Else for different set up see http://www.gnutellaforums.com/showth...620#post178620

Then configure Norton firewall ... Configuring Norton Internet Security

See if that helps

Otherwise ... try these things ... Fixes for Limewire (click on blue link) which means removing all versions of Java & reinstalling Java 1.5