I've a problem to my pci wlan card for use new madwifi driver.I download from:

http://snapshots.madwifi.org/

where it is madwifi-trunk-current.tar driver.The pb is when turn into monitor mode the mac address change to ex : 06:11:22:33:44:55 and i chane to managed mode it also same.After reboot its become normal.But when uninstall that driver and using the others driver its work fine the mac address become 00:11:22:33:44:55.But the injection from the 2 drivers work fine.