In my ubuntu 9.04 with Atheros AR242x ; I have same error.
I solved the problem as follows:
Download the package http://snapshots.madwifi-project.org/madwifi-hal-0.10.5.6/madwifi-hal-0.10.5.6-r4068-20090705.tar.gz
decompress and install.
Activate the module: modprobe ath_pci
Edit the file /etc/modules and add: ath_pci
Reboot ...
And wireless networks work without problem ..
In my ubuntu 9.04 with Atheros AR242x ; I have same error.
I solved the problem as follows:
Download the package http:// snapshots. madwifi- project. org/madwifi- hal-0.10. 5.6/madwifi- hal-0.10. 5.6-r4068- 20090705. tar.gz
decompress and install.
Activate the module: modprobe ath_pci
Edit the file /etc/modules and add: ath_pci
Reboot ...
And wireless networks work without problem ..