anyone using airport extreme with limewire must allow port 6346 through by going to:

utilities>airport admin>configure>portmapping
(im using a static ip)

also allow 6346 in systemprefs>sharing>firewall

last but most important:

in limewire prefs, select advanced>firewall>and select manual port forward (enter 6346)

after i did this i got results and speeds that blew my damn haed off...good luck