Hi everyone, I'm hoping to buy the next MacBook pro on launch but have a few questions to ask. 1)Is there a way to check if the machine you got is part of the defective batch? 2)Can you return it if they are part of the defective batch? Even when there are no obvious problems? 3) how can we be sure the machine you're buying is not part of the defective batch? Is there somewhere we can check on the box or tech spec?