My Sony Ericsson Xperia (model is X10 I think) won't play the alarm again after I've hit the snooze button. Once the alarm goes off the first time, I hit snooze, and then 10 minutes later the screen shows that the alarm is going off but there is no sound. I don't want to use this as my alarm for getting up in the mornings if this happens. I travel a lot and having a working alarm in my phone would be handy. I'm a big snoozer so if someone can help me fix this, I'd be real grateful.