Erico Augusto said: > I suppose that isn't a ACPI problem because I left the machine turned on > 2 days, but without log in any user ... and it's halt. So your machine *does* halt. Wrong subject then ;-) > When I log in the machine, left a lot of time on and try to halt I got a > kernel panic ... a lot of memory addresses rolls down in the screen. But you have a problem shutting down. Press CTRL-ALT-F1, log in as root, do a "shutdown -h now" and watch. What message do you see *just before* the kernel panic? Also try to see in your /var/log/messages how far the system came in it's shutdown before the kernel panic. HaJo