See here for info:
http://www.gnutellaforums.com/showth...threadid=51357
Do the 6346 test.
Make sure you configure your firewall for LW. Don't run 2 firewalls together as they'll interfere with each other.
Check out the parts about UPnP. If your router uses UPnP, enable it within the device & also within LW (tools > options > advanced > firewall config. Tick 'use UPnP, apply).