So, I was asked by a co-worker to give photo lessons to his parents. They each recently bought D300s(one for him, one for her) and they don't know anything about photography. And since I have one too it makes the lessons a little smoother. So there's the back story. Today I was going over some exposure stuff and I went into bracketing. I told them what it was, how to use it, which button it was(lower button on the front right next to lens). I also pointed out that the button above that was the aperture preview button. The lady said the bracket button wasn't working so she gave it to me to take a look. I assumed she was just hitting the wrong button, but somehow Nikon managed to make both buttons the aperture preview button. I told them to take it back to best buy and have them replace it. And if they gave them any trouble go straight to nikon with their warranty. That was a bit long winded, but I haven't heard of anyone else having that problem.