I think this may be actually a bug in ralink driver. I've checked with PCMCIA ralink-based card and get the same results - NetworkManager thinks it's a wired interface, and there's no entry in /proc/net/wireless. An atheros-based card works pretty well.
cheers -- [edgy] network-manager sees usb wifi (rt73usb) as wired net https://launchpad.net/bugs/62535 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs