Assertion failure in 2.5.69-mm9

[Con Kolivas]

Sorry been out of it a bit so you have probably already seen this which 
occurred at boot:

Freeing unused kernel memory: 268k freed
Assertion failure in __journal_remove_journal_head() at fs/jbd/journal.c:1686: 
"buffer_journal_head(bh)"
------------[ cut here ]------------
kernel BUG at fs/jbd/journal.c:1686!
invalid operand: 0000 [#1]
CPU:    0
EIP:    0060:[<4017d988>]    Not tainted VLI
EFLAGS: 00010246
EIP is at __journal_remove_journal_head+0x30/0x120
eax: 0000006c   ebx: 4e781930   ecx: 40310e44   edx: 00000212
esi: 4dfef360   edi: 0000000b   ebp: 4eb94a00   esp: 4eb71dd8
ds: 007b   es: 007b   ss: 0068
Process kjournald (pid: 16, threadinfo=4eb70000 task=4eb6f940)
Stack: 402e11e0 402e1998 402e1195 00000696 402e1980 4e781930 4dfef360 4017daff
       4dfef360 4dfef360 4e781930 40179add 4e781930 4eb70000 4fd3766c 00000001
       4eb71fbc 4fd37678 4eb94a54 4fd37654 4fd3763c 00000000 00000f1c 4f6980e4
Call Trace:
 [<4017daff>] journal_put_journal_head+0x5b/0x80
 [<40179add>] journal_commit_transaction+0x87d/0xf70
 [<40114944>] autoremove_wake_function+0x0/0x38
 [<40114944>] autoremove_wake_function+0x0/0x38
 [<40116746>] __call_console_drivers+0x3e/0x50
 [<40113445>] default_wake_function+0x19/0x20
 [<40113482>] __wake_up_common+0x36/0x50
 [<40113320>] schedule+0x2a8/0x370
 [<4017bf4b>] kjournald+0xeb/0x29c
 [<4017be60>] kjournald+0x0/0x29c
 [<40114944>] autoremove_wake_function+0x0/0x38
 [<40114944>] autoremove_wake_function+0x0/0x38
 [<4017be50>] commit_timeout+0x0/0xc
 [<40106f7d>] kernel_thread_helper+0x5/0xc

Code: 0c 8b 5e 24 8b 06 a9 00 00 02 00 75 29 68 80 19 2e 40 68 96 06 00 00 68 
95 11 2e 40 68 98 19 2e 40 68 e0 11 2e 40 e8 70 8f f9 ff <0f> 0b 96 06 95 11 
2e 40 83 c4 14 83 7b 04 00 7d 29 68 b6 19 2e
 <6>note: kjournald[16] exited with preempt_count 1

Con