Every now and then, my 2010 27" iMac won't wake up from sleep by pressing a button on the keyboard or the Magic Trackpad. The computer won't even respond to a tap of the power button so I end up having to hold it down for a hard reset. It seems like this only happens when the Mac sleeps with an application running (usually EyeTV 3). Is it an issue where the bluetooth keyboard and trackpad aren't communicating with the Mac properly? Please help!