Try in Limewire. Go to Tools-->Options-->Advanced-->Firewall Config

Make sure that Manual Port is chosen.

Now pick some random number in´the 50000 to 65000 range (eg. 64049) and type that into both the listening port and the forwarded port boxes. Then press Apply and OK. Now restart Limewire.

Try this with all firewalls off at first. If it works then try enabling the Norton one again.