I've had my imac now for about two months and have been very satisfied with everything about it. However yesterday Sunday Feb. 14th. I bought a full size keyboard with the number pad. Have really been missing that number pad. Well comes my first complaint. The Space Bar rattles. All works fine just the rattle... Tried to carry it back for an exchange. Nope no way. All is working so just have to live with it. Hum not sure I like that. Guess it's something to do with the size of that key. Anyway small but still a complaint. Also surprised the mac store didn't make it good...