Has anyone experienced this? My iPhone 3GS home button needs to be pushed hard / held / pressed at the edges / sworn at / pleaded with / whatever it takes, to operate while in my house. This is despite it having been replaced twice. OTOH, if I'm out of the house; in the car, at the mall, or ANYWHERE else, it operates perfectly normally. Any ideas? Mike PS. My housemate has an identical phone, and has no problems whatsoever.