Ever since about 2.4.5 I have only had two or three kernels which could
sucessfully and consistently reboot/halt my machine.  The board is a
dual processor Tyan Tiger 230 running with 1 GB of Registered ECC RAM
set up to use 4-way interleave in the BIOS.  The last kernel to
successfully reboot/halt this box was 2.4.6-ac2.  Whether I use ACPI,
updated ACPI straight from Intel's site, APM (with power management
turned on, using either software or real-mode power off) or nothing at
all init will start going into runlevel 0 or 6 and then at the end of
the scripts when it normally powers itself off or reboots the kernel
displays "INIT: there are no more processes left at this runleve" and
all I can do to reboot is a SysRq-S,U,B.  I doubt that it is my init
scripts which have become messed up since while the kernel barfs on
pretty much any other set up it will work perfectly with the same
scripts and 2.4.6-ac2 using ACPI.  Thank you for any help regarding why
this happens and how to fix it.

Jordan Breeding

Files included:

lspci --> `lspci -vxxx`
dmidecode --> `dmidecode`
x86info --> `x86info --all`