So I use my iPhone as an alarm usually with an app that lets me play my music on it to wake me up. Except today it didn't go off at the time I thought, or at least I thought that was it until I turned it on and noticed the alarm was going off but no sound was coming out. At first I checked sound level (that shouldn't be it, the alarm is good about playing even if the phone's sound is down or on mute, it goes by it's own volume setting). Even if it was it, that wouldnt' work cause the mute button was off and volume was at full. So I tried playing music through the music app. It wouldn't play any song I tried. I would press play and it would for a second start and then go back to not playing (Like it was acknowledging it wasn't playing the song but would refuse to play it). I restarted the phone and that fixed that. But seeing as I use my phone as an alarm, this is going to be an issue if it's not a one time thing (I need to trust it will wake me up so just cause restarting it makes it work again doesn't help me). I haven't encountered this in iOS 5 (one time the alarm did fail to go off ever, it's a reliable app mostly, but that time it was the app not going off). Is this just a random fluke or have other people encountered this?