Hey guys,

I ran into the disabled airport problem today: I disabled my airport and rebooted a while later. This results in a situation where the airport is disabled in OSX, and enabling it doesn't work.

However, I was able to fix it pretty easily. Here's the steps I took:
1. Turn wifi off in BIOS and boot OSX
2. Open network preferences and remove airport settings
3. Reboot
4. Turn wifi on in BIOS
5. Boot other OS (I booted XP) to make sure the wifi card is running
6. Boot OSX
7. Add airport in network preferences

I'm pretty sure that not all steps are neccessary. Probably just step 2, reboot, and step 7 are enough.

Anyway, this saved me from having to do a reinstall ;-)