another data point
Here's another odd thing that I just noticed:
I just tried to adjust the screen brightness, but sliding the little slider had ZERO effect on luminescence at all. The brightness is the same at "0%" as it is at "60%" and "100%." Seems to be stuck at whatever brightness I last had it at - probably around 35% or so.
So far, this is the one other feature I've found (besides battery charging and screen blanking-out) that is not fully functional.