i been having some problem with my mac since i bought it, i usually have my notebook connected to the power supply. Usually when i leave a computer it will goto sleep while this being very normal, when i come back and move the mouse it should wake itself up. But this does not appear to happen on the mac, it doesn't seem to wake when its asleep no matter if i press the keys or move the mouse it will not respond to me. I have to press the power button (hard booting) to shut it down and i will lose all the work i have on screen before it went to sleep. Any help......?