A great tip submitted by Nessuno: Deep Sleep! The current version of OS X only lets you entirely shut down your computer or put it to sleep. Deep sleep (or safe sleep) is supported on the latest PowerBook G4 as well as all the newer Intel Macs. What it basically does is it copies the content of the Ram to the hard drive and entirely shuts down the computer. The regular sleep option leaves everything in the Ram and brings just enough power to the Ram to keep the data. This is especially a problem when the power goes out and your computer is asleep. You lose everything that was loaded. With the deep sleep however, there is absolutely no power needed and it won't, even slightly, discharge the battery of your laptop. You can pretty much see what deep sleep is about when your laptop runs out of battery. Just before missing power, the laptop copies the info that is in the ram to the hard drive and when you hook it up to the wall and wake it up, it boots and reloads exactly where you left by retrieving the whole info from the hard drive. There is unfortunately no way of using the "Deep Sleep" option on demand. A great widget can solve this issue! It is called "Midnight" and it is a free download here on Softpedia! Thanks for the great tip Nessuno!