I experience the same as Eric on a clean Herd-1 install. (prism2_usb card, I have installed linux-wlan-ng from the CD). The GUI presents wlan0 as a wired device, so I had to manually edit /etc/network/interfaces to get online.
-- [network-admin] network preferences gone after dapper -> edgy upgrade https://launchpad.net/bugs/67201 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs