Received my new macbook as a replacement to the broken one yesterday (so a swap from a Rev. A. to rev D., quite good!) but for the life of me, I can't get it to change between mirrored and extended displays? I assume it's to do with the keyboard change, but what's the new shortcut? I don't want to have to go through system preferences every time! Having bluetooth disappearing issues with this one too but I reckon it's a usb power problem now!