I have had my new iPad2 for less than a week, and already I am having some quirky problems. Not a good sign. Overall, I guess I am quite happy. But last night, after giving the device a full charge (it had gotten below 20% on the battery meter), when I picked it up this morning, it was locked into landscape, and I couldn't unlock it! I had to reboot the device to clear the problem (I held the sleep switch down for 5 seconds). And that worked, it came back to life in the normal mode. I don't understand why it got locked in the first place, and it baffles me that I couldn't unlock it. Other than the rotation being stuck in landscape, it was in perfect operating condition... and is fine after the reboot. Strange.