Just looking for some help with this maybe its something that I am doing wrong. My IMAC just arrived today, I have a wireless keyboard and mouse from Logitech made for Mac installed. When i go to the Apple icon and try to put the computer into sleep mode it actually shuts off and the only way to get it to turn back on again is to hit the power button. I have done searches on this and have not found anything current, so I thought I would post here before I called AppleCare in the morning. Thanks for any advice you can give.