-current hang during boot on SMP machine

I'm trying to get -current (from Friday, November 26th 2004) online on a
dual 1GHz Pentium III box.

It hangs during boot, normal dmesg, bootverbose dmesg and the kernel
config file are attached.  (bootverbose dmesg is right after the normal
dmesg.)  The last line printed prior to the hang is:

pci_link0: <ACPI PCI Link LNUS> irq 10 on acpi0

It currently runs 4.x fine on a separate disk.  (I built -current on the
4.x disk, and installed it on top of a 2 year old -current on the other
disk.)

It's a Supermicro 370DE6 motherboard (Serverworks chipset) with 2 1GHz
Pentium IIIs.  It has 2.5GB RAM, and is booting from an onboard Adaptec
7899.

Thanks for any help,

Ken
-- 
Kenneth Merry
ken_at_FreeBSD.ORG