My home button has been acting kind of weird past few months. When I click home once sometime it will trigger the multitask bar as if I had pressed double. This happens randomly. Sometime clicking once does nothing. Is this the software issue or hardware button is failing? The problem is I cannot duplicate this problem. It seems to happen when I'm busy doing something like I was checking something on Safari and when I quit to home it will trigger this...Since I can't duplicate I doubt Genius bar will replace it.