The linksys wrt54 has buggy firmware & is totally inconsistent & unreliable when run in UPnP mode. See http://www.gnutellaforums.com/321409-post3.html

Make sure your XP firewall is disabled. Then give LW full access thru your Norton firewall: Configuring Norton Internet Security. Else, if not using Norton firewall, disable it & configure your XP firewall for LW: http://www.limewire.org/wiki/index.p...r_Cant_Connect. You can find your XP firewall via your Control panel.