Woke up this morning, bump charged my phone and went about my morning routine. Unplugged my phone and turned it on and all was well. Listened to some music on my way to work and everything worked great. Updated Angry Birds Seasons and got a text message. Ever since then the power button has stopped working. I can't put the phone to sleep manually and when the screen times out, I can't wake it up. Any idea what could be causing this? I've uninstalled Angry Birds Seasons and Handcent and that doesn't make a difference. Any ideas?