ADAM.DAVENPORT While MacLoc may not be the solution for everyone, it is the perfect solution for me and so I thought I'd share it.
I've used the password features in both OS X's screensaver and wake from sleep, but in my situation I'm finding myself having to enter my password way too often.
MacLoc was born out of the need for something that I had complete control over. Since users with desktop machines can't simply "close the lid", MacLoc does exactly what I want, when I want it to.
(Version 1.1)