Joan, I've also checked through security several times with my iBook, and on each occasion they wanted me to turn my machine on. After my first experience, I always leave my iBook in sleep mode so I can show it works normally ASAP (and I think the security personnel appreciate it since allows them to keep things moving). If you prefer to shut it down for the flight, you can always leave it in sleep mode in preparation for security checks, and then shut it down completely once on board the plane (or when you're waiting at the gate). Sleep is a lower power "stand-by" mode, so it won't interfere with flight navigation during take-off and landing. As a precaution, remember the "three finger salute" -- Apple(command) + Control + Power button -- to force-reset the laptop in case it doesn't wake from sleep properly. This has never happened to me at security, but it's a good to know "just in case," along with the little paperclip hole procedure if it doesn't start up from a cold boot. Jason On Wednesday, January 15, 2003, Joan Keenan wrote: > Hi, > Just curious as to whether sleep counts as not using your computer on > an airplane. It seems that everytime I travel at least one check point > decides that I must start up the computer to check it. Of course with > OSX this takes about 2 minutes so I am stuck standing there and then > need to shut down. I have been shutting down before boarding. I > normally just put it to sleep when taking it to work. > Thanks > > Joan