Yes that's right ... sometimes it is fruitful using a different port to the default 6346. Such as any of the unused ports in range 49152 - 65535. Port 64049 is often a good one to use. To change port in LW, go to LW's preferences, Advanced>Firewalls & change listening port & perhaps also connection port. If you use your OSX firewall then you should change the port listed for limewire/gnutella.