Try turning the OSX firewall off momentarily to see if it makes a difference (before you open LW.) Many osx users don't use their firewall, not suggesting you shouldn't. But it may be the issue. You may need to make another setting for port 16952 for Gnutella. To be specific, add it to the present gnutella setting by selecting it, editing it, put a comma & then space after 6346 & then add the other port 16952. eg: 6346, 16952