i know a lot of you are having troubles with getting the Atheros AR5007 wireless card working with Hardy Heron. I sent a help request on the madwifi site and i got a modified version for the AR5007 for Hardy.
Heres the tutorial:
First disable Atheros Hardware Access Layer [HAL]:
Go to System>Administration>Hardware Drivers
and uncheck Atheros Hardware Access Layer
after reboot type these into a terminal window:
sudo apt-get install build-essential
tar xfz madwifi-nr-r3366+ar5007.tar.gz
then reboot and it should work!
sudo modprobe ath_pci