I've never had any problems with my iMac until I upgraded to Lion (OS X 10.7.2) but now when my computer goes to sleep overnight, when I click the mouse or press the keyboard, there's no response. I can press the power button and the display comes right up the bluetooth mouse and keyboard will not connect unless I hold the power button in and do a complete restart. I talked with Apple Care and they suggested that maybe I wasn't waiting long enough for the mouse to reconnect, but that is now the case. Has anyone had this problem and know of a solution? Thanks so much.