Decided to register just to mention this:
I also find that you can't turn it on while connected to the keyboard dock - it just bootloops.
Occasionally it "locks up", you have to press the lock button twice for the screen to turn on, and then you can't do anything, a few seconds later the screen turns off again.
+ The sleep rebooting issue
How the heck these sort of things got through even a single decent test is amazing