According to the madwifi bugtracker madwifi doesn´t even build on 2.6.20 currently:
http://madwifi.org/ticket/1048 -- Atheros wifi0 device not being created by loaded ath_pci module https://launchpad.net/bugs/76641 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
