I was just wondering what those of you with laptops do when you want to go away from your computer for a while. For instance, when I go to bed I usually shut my laptop off, wake up and go to classes, and return to turn it back on. Is this necessary? Can I just leave it sit looged off of windows with the sceen-saver running? I am on a LAN ethernet connection at a university if it makes a difference. Also, my computer wont let me put it into "stand by" mode. Thanks in advance.