Just thought id add that this might not be specific to Bluetooth, or your keyboard etc. I had the type cover attached about an hour ago, and simply alt f4'd a program, the machine went nuts. You know when you alt f4 and it sometimes just throws up the shot down, hibernate popup box, well mine just freaked out and was opening and closing it at a million billion instances a second. Couldn't close it, just sat there flickering as it opened and closed the pop up non stop. Seems something is up with the most recent update.
Strange, I'll try to replicate it.