So my iPhone 5 64GB black came in Sept 26th, and has otherwise been perfect. But my lock/power button is smushy, flat, and not clicky at all. I had the same issue with my 4, had to get it replaced. I have an appt with the Genius Bar this Sat to swap it out. Anyone else having this issue with a soft, flat, mushy, un-clicky lock/power button??