I have a new Mac mini and since I got it, quite often when I wake it from sleep I only get a black screen with a curser. I can move the curser, but hitting any keys I only get the error "beep" I guess I'd call it. I have to hold the power button to turn off the mini, thn turn it back on. It's a base mini hooked up to my tv with HDMI. It doesn't sound like the random black screens that see, to be an issue with the new mini. I rarely use the mini, but haven't seen the screen to black when actually using it. It just seems to not come back from sleep properly.