It seems to work for me, but I cannot manage to change the mode used. airmon (from aircrack) and iwconfig are not able to put the card on "monitor mode" or "Ad-Hoc mode".
I don't know if this is related -- madwifi refuses to load on current restricted-modules https://launchpad.net/bugs/53853 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs