Out of nowhere, the Air lost the airport card. Did a quick search, realized that is a rather common problem. Tried the usual resetting and etc, didn't work. Thinking maybe it's a hardware failure, I was about to take the back cover off and re-secure the airport card. Before I got the chance to do so, the airport worked after a random restart. It lost it again after another restart. Question is: If the airport showed up once, does it mean it's longer a hardware issue? If its software issue, what's the fix? I really don't want to bother with reinstalling OS.