I have two iBooks which give KP Errors, and give the "You Must Restart Your Computer" message when booting. Supposedly this is related to the Airport Extreme/Bluetooth Card. I'd like to see if I still get the error is I remove the AP/BT card. However there is no AP/BT card under the keyboard. Supposedly the AP/BT is mounted directly on the logic board. But I can't find any more info about the error or how to remove the AP/BT card/ Any help would be appreciated! Thanks, Jim.