My FreeBSD 5.3 box got panic: vm_page_free: freeing wired page,auto reboot

[Unreal HSHH]

My FreeBSD 5.3 box got panic: vm_page_free: freeing wired page,auto reboot.
I need a help.

panic: vm_page_free: freeing wired page
cpuid = 0
boot() called on cpu#0
Uptime: 7m35s
Cannot dump. No dump device defined.
Automatic reboot in 4 seconds - press a key on the console to abort
Rebooting...
cpu_reset called on cpu#0
cpu_reset: Stopping other CPUs

# uname -a
FreeBSD hshh 5.3-RELEASE-p2 FreeBSD 5.3-RELEASE-p2 #6: Sat Dec 18
20:50:15 CST 2004     root at hshh:/usr/obj/usr/src/sys/hshh  i386

MPTable: <AMI      CNB30LE     >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) III CPU family      1266MHz (1262.68-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x6b1  Stepping = 1
  Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory  = 1073741824 (1024 MB)
avail memory = 1045250048 (996 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1

-------------
my kenel :

machine         i386
cpu             I686_CPU
ident           hshh
maxusers        512

options         SCHED_4BSD              # 4BSD scheduler
options         INET                    # InterNETworking
options         INET6                   # IPv6 communications protocols
options         FFS                     # Berkeley Fast Filesystem
options         SOFTUPDATES             # Enable FFS soft updates support
options         UFS_ACL                 # Support for access control lists
options         UFS_DIRHASH             # Improve performance on big directories
options         PROCFS                  # Process filesystem (requires PSEUDOFS)
options         PSEUDOFS                # Pseudo-filesystem framework
options         GEOM_GPT                # GUID Partition Tables.
options         COMPAT_43               # Compatible with BSD 4.3 [KEEP THIS!]
options         COMPAT_FREEBSD4         # Compatible with FreeBSD4
options         SCSI_DELAY=5000         # Delay (in ms) before probing SCSI
options         SYSVSHM                 # SYSV-style shared memory
options         SYSVMSG                 # SYSV-style message queues
options         SYSVSEM                 # SYSV-style semaphores
options         _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time
extensions
options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
options         ADAPTIVE_GIANT          # Giant mutex is adaptive.

device          apic            # I/O APIC
options         SMP

# Bus support.  Do not remove isa, even if you have no isa slots
device          isa
device          pci

# ATA and ATAPI devices
device          ata
device          atadisk         # ATA disk drives
device          ataraid         # ATA RAID drives
device          atapicd         # ATAPI CDROM drives
options         ATA_STATIC_ID   # Static device numbering

# SCSI Controllers
device          ahc             # AHA2940 and onboard AIC7xxx devices

# SCSI peripherals
device          scbus           # SCSI bus (required for SCSI)
device          ch              # SCSI media changers
device          da              # Direct Access (disks)
device          pass            # Passthrough device (direct SCSI access)
device          ses             # SCSI Environmental Services (and SAF-TE)

# atkbdc0 controls both the keyboard and the PS/2 mouse
device          atkbdc          # AT keyboard controller
device          atkbd           # AT keyboard

device          vga             # VGA video card driver

# syscons is the default console driver, resembling an SCO console
device          sc

device          agp             # support several AGP chipsets

# Floating point support - do not disable.
device          npx

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device          miibus          # MII bus support
device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)

# Pseudo devices.
device          loop            # Network loopback
device          mem             # Memory and kernel memory devices
device          io              # I/O device
device          random          # Entropy device
device          ether           # Ethernet support
device          tun             # Packet tunnel.
device          pty             # Pseudo-ttys (telnet etc)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
device          bpf             # Berkeley packet filter

options         INCLUDE_CONFIG_FILE
options         AUTO_EOI_1
options         ZERO_COPY_SOCKETS
options         PANIC_REBOOT_WAIT_TIME=4