This is the 2nd time this has happened... Yesterday I upgraded to 2.0.2, then rebooted and fully charged my iPhone's battery. I went to sleep with a full charge. I woke up around 4AM to a bright light in my room. It was my iPhone on and at the "Slide to Unlock" screen. Pushing the Sleep/Wake button twice took it away, but it was awake and on the screen long enough to take the battery down to about 1/4th charge. Anyone else experiencing this?