The scenario: My phone is sleeping. I get a text message. I have Handcent. I open the notification but the sound continues going off. I can't figure out how to interupt it. I have tried the volume keys, they don't work. I have tried the power/sleep key, it doesn't work. I have also tried swiping down the notification bar and opening the message from there but it still doesn't silence the sound. I know this is probably something very simple but I give up. Any thoughts?