Thanks for the great details btw. Perhaps I'm missing something that's windows specific. But it looks fine to me.

NetComm supports UPnP btw. Try it instead of port forwarding. Rarely would I suggest this but it might be worth a go.

Once enabled on your netcomm, save settings, then open LW & change setting in advanced to UPnP instead of port forwarding. Again, close & re-open LW.

Oh I just read your post. It doesn't support UPnP? Are you sure? Check the options. Here for NB1 it is supported if go to Advanced tab http://www.portforward.com/english/r...1/Limewire.htm

Using your browser go here: http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there?