Sorry, we received a kernel oops as follows even after swapping out the 
motherboard and SCSI Controller: 

ksymoops 2.3.4 on i686 2.2.12-20. Options used 
-V (specified) 
-k ksyms (specified) 
-l modules (specified) 
-o 2.2.16 (specified) 
-m System.map (specified) 

eax: 00000000 ebx: c0114447 ecx: 00000000 edx:
00000000 
esi: d3164000 edi: bffffbfc ebp: 00000000 esp:
d3165fc8 
ds: 0018 es: 0018 ss: 0018 
Process crond (pid: 566, process nr: 13,
stackpage=d3165000) 
Stack: bffffbfc 4010648c bffffbfc bffffd10
bffffd90 000000a2 0000002b 
0000002b 
000000a2 400a87f1 00000023 00000246 bffffbc8
0000002b 
Code: a0 fd ff bf 7d 98 04 08 3c 00 00 00 ac fd
ff bf b8 fd ff bf 
Using defaults from ksymoops -t elf32-i386 -a
i386 

Code; 00000000 Before first symbol 
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: a0 fd ff bf 7d movb 0x7dbffffd,%al
Code; 00000005 Before first symbol
5: 98 cwtl
Code; 00000006 Before first symbol
6: 04 08 addb $0x8,%al
Code; 00000008 Before first symbol
8: 3c 00 cmpb $0x0,%al
Code; 0000000a Before first symbol
a: 00 00 addb %al,(%eax)
Code; 0000000c Before first symbol
c: ac lodsb %ds:(%esi),%al
Code; 0000000d Before first symbol
d: fd std
Code; 0000000e Before first symbol
e: ff (bad)
Code; 0000000f Before first symbol
f: bf b8 fd ff bf movl $0xbffffdb8,%edi

Unable to handle kernel NULL pointer
dereference at virtual address
00000404
current->tss.cr3 = 13e6b000, %cr3 = 13e6b000
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c01128dc>]
EFLAGS: 00010006
eax: 00000400 ebx: d3fe3f18 ecx: 00000246 edx:
d3fd7728
esi: 10d1d003 edi: 0000000b ebp: d3fe3f04 esp:
d3fe3f08
ds: 0018 es: 0018 ss: 0018
Process init (pid: 1, process nr: 2,
stackpage=d3fe3000)
Stack: c011297e d3fe3f18 d3fe3f1c 00000000
00000400 d3fd7728 c01cc624
10d1d003
d3fe2000 c0112684 00000000 c0131b5d c5e3b234
0000000b c5e3b238
0000002a
00000104 0000000b d3fe2000 000001f4 00000000
cf594000 c01320de
0000000b
Call Trace: [<c011297e>] [<c0112684>]
[<c0131b5d>] [<c01320de>]
[<c0109260>]
Code: 89 50 04 90 b8 01 00 00 00 eb 03 90 31 c0
c7 43 04 00 00 00

>>EIP; c01128dc <del_timer+28/58> <===== 
Trace; c011297e Trace; c0112684
<process_timeout+0/10>
Trace; c0131b5d <do_select+9d/228>
Trace; c01320de <sys_select+3f6/550>
Trace; c0109260 <system_call+30/38>
Code; c01128dc <del_timer+28/58>
00000000 <_EIP>:
Code; c01128dc <del_timer+28/58> <===== 
0: 89 50 04 movl %edx,0x4(%eax) <===== 
Code; c01128df 3: 90 nop
Code; c01128e0 <del_timer+2c/58>
4: b8 01 00 00 00 movl $0x1,%eax
Code; c01128e5 <del_timer+31/58>
9: eb 03 jmp e <_EIP+0xe> c01128ea
<del_timer+36/58>
Code; c01128e7 <del_timer+33/58>
b: 90 nop
Code; c01128e8 <del_timer+34/58>
c: 31 c0 xorl %eax,%eax
Code; c01128ea <del_timer+36/58>
e: c7 43 04 00 00 00 00 movl $0x0,0x4(%ebx)