Crash on boot

[justin at shiningsilence.com]

shiningsilence.com will panic very early in the boot process as shown here:

http://www.shiningsilence.com/bootcrash.jpg

It's happened twice so far, and I have swapped out the
case/motherboard/power supply between the two events.  The kernel config:

http://www.shiningsilence.com/WWW

APIC_IO is commented out, but SMP is not - I think this matches
leaf.dragonflybsd.org's setup.  I wonder, though, since the panic's
happening while bringing up the CPU.  It's running 2.4.1.