I've been having a really strange problem with my ring/silent switch. When the phone's on ring, there's no problem. When I flip the switch to silent, sometimes the phone decides that it's not sure what I set it to, so it goes back and forth between the two modes, even though the phone is set to silent. It vibrates repeatedly and shows the bell icon and then the bell with a slash through it. This repeats about 10 times and then it stops. I'm trying to avoid taking it back to the Apple store. I've already tried a software restore, and the problem persists. I've had it since 1.1.2, also. What should I do?