I have the same problems as you all seem to experience. Good thing that it isn't specific for me, but bad if Apple don't find a solution. I found the mouse (4 feet from Mac Pro) immediately totally unusable. I thought this was just how bluetooth mice worked. So I plugged in a USB mouse instead and am using that. The keyboard hasn't given me that many problems, just recently. Maybe because I filled all my harddrive bays, caused transmission to be worse? Dunno, but now I get the stuck keys and "connection lost" from time to time. Totally unacceptable. If this doesn't get solved soon I will get a USB keyboard. But pretty lame I shelled out for this wireless solution which works like crap then. I wonder if this is fixable by Apple at all by a firmware update. I would assume it is a hardware problem :/