Hello! My unibody MBP's display does not remain closed in the messenger bag and I had four repairs for the same issue. When I got my machine back from the fourth repair, the problem is still happening. I called the senior advisor and he said it's not worth another repair. So he is going to offer me a mail-in replacement. My question: Since I need to send this machine back before they issue me a replacement, how long will it take to get my replacement? Do I need to send the product box back to them as well? (I already lost it). Thanks guys!