yeah, it's happened to me a few times. totally different issue but i was actually getting ready to go into the movies the other day and tried to silent my phone, nothing happened. i pushed the home button, nothing. sleep/wake button, nothing. it wouldn't let me reset either. luckily, i was right by at&t and they got it working again. :/ still, the first half hour of chris pine i lost wont ever be gotten back... haha. (yay crappy $2 movie theaters still showing star trek.)