System Shutting Down Unexpectedly (Ubuntu 10.04)

[Tom Browder]

Update:

Yesterday I flashed my BIOS with the latest version. and upgraded to
the new kernel (2.6.32-24.39) today.

I reset all boot parameters and /etc/pm/sleep.d to default (as installed).

I am monitoring temps with (hard drive and CPUs) with NoOp's suggested applet.

I rebooted, said a little prayer, and have an uptime now of almost five hours.

If that doesn't work, the last link NoOp gave:

  http://www.kernel.org/doc/Documentation/power/

is a gold mine for further research.

-Tom