My 4-month old laptop's F12 key broke off. Initially, I noticed the key was not aligned with the other keys. When I pressed it a couple of times, it came off and stick to my finger.
Here is an experience by Doug Johnson: Open letter to Steven Jobs, Apple Computer. My laptop brand also starts with an A, but it is not an Apple. Unlike Doug, I have not dropped my laptop.
I don't know what the reception will look like when I bring it for repair. I'll post the result here later.