I have a Windows Home Server which configures holes in the NAT firewall via upnp. It configures access through to itself on ports 80,443 & 4125. Entries in Tomato 1.28 from Jon Z's site configure all 3 entries and they're displayed as 'WHS_portnum'. TomatoUSB only configures one of the ports (port 4125) it does not configure ports 80 or 443.
I've cleared the NVRAM and set a bare minimum config (IP address & DHCP) so I could test 'fresh' - no change. I also tried Victek's firmware which also exhibits the problem. Reverting back to 'Tomato 1.28' and the problem goes away.
Something is broken with upnp in recent 1.28+ releases. Hope someone can help.