USB ports show up as network interfaces
usbus## shows up as network interfaces on both the console and in the WebUI. See attached screenshots. This was tested on 2 different boxes. One box was a 2.0.1 to 2.1 upgrade using the pfSense-Full-Update-2.1-DEVELOPMENT-amd64-20120322-1116.tgz snapshot. The other was a clean install using pfSense-LiveCD-2.1-DEVELOPMENT-amd64-20120322-1116.iso.