Ah, OK. I must have missed that part (or seen it and it didn't register, or....). Actually, I just reread his two posts and I still don't see him actually say he is for sure firewalled - just that he isn't connecting to all the available peers/seeds/leechers.
Anyway.... you say you've tried several different ports. Are you making sure that when you change the port you want to use, that you are changing it in your bittorrent app, your XP firewall, your router, and Norton (not sure if you have to change it specifically in Norton since I don't use that).
NAT check available here:
http://btfaq.com/natcheck.pl
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