Fatal Trap 12 while booting up?

[Andy Holyer]

A colleague "helped" me by powering-down my FreeBSD 5.1-RELEASE server. 
This box doesn't boot with ACPI enabled (I think the hardware's too 
old), but now it goes through a bunch of devices and then comes up 
with:

unknown:<PNP0c01> can't assign resources (port)
Timecounters tick every 10.000 msec


Fatal Trap 12: page fault while in kernel mode
....
And then tries to reboot. Over and over again. I seem to recall there 
was a known fix for this behaviour...

Thanks in advance for any advice.

---
Andy Holyer, Systems Administrator
Hedgehog Broadband, 11 Marlborough Place Brighton BN1 1UB
08451 260895 x 241