The new Air reinstall process is interesting, the system seems to retain your wifi password even if you wipe the OSX partition... Deleted the users accounts, cleared the auto connect wifi setting. Reboot Cmd R, to recovery utility and wiped the main partition. Rebooted held nothing ... to a flashing question mark. Rebooted option held down ... to a prompt for selecting wifi/password which I ignored Rebooted Cmd R held ... A spinning globe pops up, and it tells me 'Starting the recovery process from network this may take a while' I confirmed on my router it was connecting after the globe stopped spinning (5-10 minutes), it ran the recovery utility. How was it downloading with a wiped partition and no wifi password entered?