Starting today when I try to set an alarm or set a timer to go off it will not make an audible sound, it will only vibrate and flash the trackball light. The ringer volume is set, when people call me and send me text messages those sounds play just fine. I'm at my wits end and I'm extremely frustrated, if anyone has experienced a similar problem and found a solution please help. I've had this phone since it was released and I'm quite proficient but I can't for the life of me figure this out.