Interested to see what people are doing with UPnP, I understand it can be considered a security threat but its mega useful for services such as Xbox live. I'm torn at the moment as I have it disabled in applications like uTorrent and although I'm using a VPN i prefer it that way knowing that the application can't use UPnP. I'm not sure whether to have it enabled on the firewall side though, purely to allow Xbox Live to use it. Either way from a privacy / ip leakage scenario what would be best to run.. but more importantly what are you doing?!