When I put my iMac to sleep using the Active Screen Corner sometimes my screen turns back on whenever. I dont know if my mouse is moving waking it up or what. It's really irritating cause when *I'm* sleeping all of a sudden BAM! bright screen right in your face, like staring at the Bat-signal! I've noticed sometimes my MightyMouse's pointer jumps when I move the mouse and I don't know if that movement is causing the screen to wake up or not. No I do not have any Bluetooth devices connected. I read somewhere on here about resetting the SMC might help. I have a 24" 3.06 GHz iMac, can I do this on this model?