My iPhone 4 home button periodically does *not* respond when pressed. It is very intermittent - but noticeable. Perhaps 1 out of 100 presses will result in it not registering but it is not consistent at all. It is almost 1 year old and I've had the problem for several months now. I've lived with it because of the possibility that they will swap it with a refurb with bigger problems :-(. Given that the warranty will soon expire I've decided to have it looked at. I have a genius appointment set up but am pretty sure it won't happen while I'm in the store because it is so intermittent. Any advice for dealing with this situation?