Well something happened in the middle of the night and my phone hasn't been working right since this morning. The home key and search key buttons dont work. They vibrate when touched but don't do anything. My phone wont lock, and when I hold down the power key instead of it giving me like 4 options (like airport, sleep, etc..) it just gives me one option - power off. Anybody know what causes this and stuff, and how to remedy it?