panic when booting

I decided to upgrade my Nov 24 -current box today, but with a new kernel
it panics very early. I have tried both with and without acpi, but both
panic in the same way. (I had to run without acpi previously because
the acpi on this box is too broken.)

John
-- 
John Hay -- John.Hay_at_icomtek.csir.co.za / jhay_at_FreeBSD.org



Copyright (c) 1992-2004 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 5.2-CURRENT #63: Mon Feb  2 15:07:26 SAST 2004
    jhay_at_beast.icomtek.csir.co.za:/b/src/sys/i386/compile/BEAST
Preloaded elf kernel "/boot/kernel/kernel" at 0xc0781000.
Preloaded elf module "/boot/kernel/if_vlan.ko" at 0xc078121c.
Preloaded elf module "/boot/kernel/if_fxp.ko" at 0xc07812c8.
Preloaded elf module "/boot/kernel/miibus.ko" at 0xc0781374.
Preloaded elf module "/boot/kernel/usb.ko" at 0xc0781420.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc07814c8.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium II/Pentium II Xeon/Celeron (267.27-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x633  Stepping = 3
  Features=0x80fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,MMX>
real memory  = 134205440 (127 MB)
avail memory = 125947904 (120 MB)
MPTable: <OEM00000 PROD00000000>
kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 01
fault virtual address   = 0x0
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0492990
stack pointer           = 0x10:0xc0821b04
frame pointer           = 0x10:0xc0821b24
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 0 ()
kernel: type 12 trap, code=0
Stopped at      _mtx_lock_flags+0x50:   cmpl    $0xc062337c,0(%ecx)
db> trace
_mtx_lock_flags(0,0,c060a6a7,127,c0821bbc) at _mtx_lock_flags+0x50
vm_fault(c0c3b000,c009f000,2,0,c0641fc0) at vm_fault+0x2bb
trap_pfault(c0821cac,0,c009f000,20821c88,c009f000) at trap_pfault+0x152
trap(18,10,7070010,18e,c0637fc0) at trap+0x333
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc05cc473, esp = 0xc0821cec, ebp = 0xc0821d00 ---
install_ap_tramp(c0670c60,c06103d4,0,1,c0493303) at install_ap_tramp+0x53
start_all_aps(c0670ae0,c0610297,0,1,8) at start_all_aps+0x45
cpu_mp_start(c064f380,c05fe23d,0,1,c0631570) at cpu_mp_start+0x244
mp_start(0,81ec00,81e000,81ec00,81e000) at mp_start+0x60
mi_startup() at mi_startup+0xb5
begin() at begin+0x2c