[q] scsi disks or what the problem?

Hello!

My server paniced with:

panic: ufs_dirbad: bad dir
cpuid = 0;
boot() called on cpu#0

syncing disks, buffers remaining... panic: breemfree: removing a buffer not
on a queue
cpuid = 0l
boot() called on cpu#0
Uptime: 46s
amr0: flushing cache... kernel trap 12 with interrupts disabled

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x24
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc05bbf8e
stack pointer           = 0x10:0xe081cc64
frame pointer           = 0x10:0xe081cc88
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = resume, IOPL = 0
current process         = 59 (irq48: amr0)
trap number             = 12
spin lock shed lock held by 0xc521ea00 for > 5 seconds
panic: spin lock held too long
cpuid = 0;

This caused after power on/off for maintenance work with server. And trying
after power on rebuiling the system via make buildworld, make ... . System
paniced after 3-7min on this procedure. Before this problem server working a
1,5 year without any problem.

Now, paniced on startup. 

System: 5.2.1-p11, 1xXeon 2.4, amr0 - RAID 1 on two 36GB SCSI disks (IBM).
On startup - RAID1 (optimal). Controller - LSI Megalogic 320-1.

Need more info ? Please write me, but server is down :(

Anybody help me? This is a problem with hdd, mb, ram or system?

-- 
Edward Melnik