Hi everyone. Well, it looks like I've got my first issue with my 1.67GHz Powerbook. I have it set to never sleep, only the display turns off, yet when I woke up this morning it was asleep. No big deal. However, as I was using it, even while typing or surfing the net this morning, it went to sleep several times. Any ideas on what I should check? I'm running 10.4.8, and I've just done the iTunes/QT update from System Updater. It's pretty annoying to have it go to sleep in the middle of a sentence. I'll give it a reboot now, and see what that does. Anyone else here experienced a similar problem? Thanks for the help.