Wow, after I saw the thread on the fire with the AC adapter I'm glad I called Apple. I have 2 Macbooks, one I bought in June 06 and one I just got 2 weeks ago. The NEW Macbook power brick was so hot it could not be unplugged without protecting my hand. I know this isn't the norm after owning another for a year. They already shipped the new AC brick (within a day) and it's running like it should. I'm really paranoid about notebook computers because a couple years ago I left my compaq plugged in on the bed and it was smoking and burned the sheets. Good thing I was home! Lessons learned. Now, any laptop I charge I make sure I'm around when it's doing it. If you want a 24x7 computer, get a proper desktop.