Do you have the linux-restricted-modules-generic and linux-restricted-modules-2.6.17-11-generic installed? or check the contents of the /lib/modules/2.6.17-11-generic/madwifi/ directory.
Could you provide the output (if any) of 'sudo modprobe ath_pci' -- Wireless card (Atheros) no longer detected after upgrade to kernel 2.6.17-11 https://launchpad.net/bugs/84641 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
