Anyone else notice this. Had to stop relying on my mini as my alarm clock cuz my mini shuts itself down or crashes in the middle of the night when charging. It's always full when I turn it back on but always requires me to hold down home button and sleep button until it reboots. Anyone else notice this? Was thinking it was a safety function to help prevent over charging but highly That. My thoughts are something is wrong and may need to warranty it but would like to figure out how to reproduce it in front of Genius Bar.