I changed my wifi card to a Atheros on my laptop today. Used an old kext on this site, but it did not seem to work with a password protected network. After that i discovered this kext on my older laptop, were the Atheros card came from. Now it works like a charm!
The original file is installed with a niresh installation. Therefore the kext is not mine. Just sharing for you out there!
This way you don't have to wait 600 seconds before you can download.