It's perfectly safe. I do it every day, like thousands of other people. Just make sure that the sleep light is on before you put the computer in its case; if the computer fails to go to sleep for some reason, it can cook itself in an enclosed area like a bag. You might also want to make sure that the screen won't pop open (waking the computer) and you can avoid getting keyboard marks on the screen by placing something over the keyboard; cloth, paper, overhead transparency, kleenex... But we don't need to get into that discussion again; check the archives for other people's suggestions. kerem unal <k_unal at freesurf.ch> writes: > is it risky to transport the Tibook in sleep mode, like to put it in > the case at work and open it again at home and start working Kynan Shook kshook at mac.com http://homepage.mac.com/kshook/index.html