I saw this 
http://howto.wikia.com/wiki/Howto_get_the_Linux_kernel_to_properly_power_down_the_Dell_Optiplex_GX240_using_ACPI
 which suggests that a kernel re-compile is needed to get a Dell
Optiplex GX240 to power down when halted. I started going down that path but 
then saw this
comment in the file arch/i386/kernel/acpi/boot.c:

/*
 * If your system is blacklisted here, but you find that acpi=force
 * works for you, please contact [EMAIL PROTECTED]
 */

That prompted my to try adding acpi=force and I found that after doing that, my 
box actually
powers down when I halt it, so I am contacting this list as requested.

Greg Frost
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