Occasionally, my notification sounds will stop working. I noticed today that I had gotten a text message and didn't get the full notification sound. It was kind of chopped off. I went into Handcent and went to test the notification and sure enough, it wasn't making the audible notification. When it does this, it also mutes my other notifications, like Gmail. Has anyone else ever encountered this? Does anyone know what to do to fix it? Reboot always helps and it only happens once in a while, but it has probably happened about 5 or so times since I got the phone in December.