I am a brand new Mac user and I'm having problems with my PowerBook. When I leave work I close up my PB and bring it home in sleep mode. When I first got the computer and I did this all I needed to do was hit any key and it would wake up. Now though when I get home and hit a key all I get is a beep or sometimes nothing. I know it's running, I can hear it. I can't seem to get it to wake up. All you veterans out there may find this a silly question but I'm not quite sure how to get this to work. I've read a few books and can't find any solutions. The only thing I've been able to do is hold down the power button and shut the thing down and then power it back up. HELP!