I've been a Windows user all my life and only switched to a Mac last week during which time I've been playing around with OS X (10.5). One thing that I've been unable to figure out (there are lots more, but hopefully time and this community will sort that out) is the following: I've set my Energy Saver sliders to "Never" and unchecked all the boxes for taking my hard disk and monitor to sleep, and yet still, every time I leave the computer for a few hours and come back and login, all my applications have been closed so I'm assuming that for some reason it went ahead and restarted itself. This happens every time and unfortunately every suggestion I've gotten so far is to play around with the Energy Saver settings, which I've already done. Any help would be greatly appreciate. And thanks for this great community.