Russell,
Your STUN server was still set to zeus (74.52.58.50).
I have changed it so that it uses the same SIP server you're on.

With regards to the other IPs (primarily 67.228.251.106, 174.132.131.131 and 67.23.11.26) - I believe these may be NAT Keep Alive packets. I'll ask Brandon to confirm this when he is available.