Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5) So this is my third iPhone 4 and it is running 4.2.1. I have been having problems with the sleep/wake button. When I push it sometimes it doesn't do anything. Other times it works just fine. I don't know whats wrong? Ay suggestions?