I like my PowerBook to be secure, so in the Security System Preferences panel, I require a password when coming back from sleep. I noticed a little problem though: assume I wake the machine, and after entering my password (but before the desktop is loaded), I close the lid, and the PowerBook goes to sleep. When I wake up the PowerBook the next time, it doesn't ask for a password, but shows my secrets to the world.So don't close the lid and believe you're safe, unless you are very sure you are fully logged in. Especially when you move around a lot, and are used to just closing the notebook and stuffing it in you bag.[robg adds: This hint was marked 10.4 only; I couldn't replicate it on 10.5, at least on my desktop machine.]