Hi, also coming from InsanelyMac here, have the same problem.

I bought an Apple AirPort card, it's an AR5BXB6 or AR5006EXS or AR5424, whichever you want to call it. What is strange is that the card works fine in my AppleTV, and in my Acer Aspire 5570Z. However, I just cannot get it working in my Dell Inspiron 640m/e1405. It works perfectly in Windows and Linux, but OSX gives that AtherosController.cpp error.