Hi,

This morning again, at logon each time, Oops again : 

Jan 27 08:18:10 fraggle kernel: Unable to handle kernel paging request
at virtual address e0e146a0
Jan 27 08:18:10 fraggle kernel:  printing eip:
Jan 27 08:18:10 fraggle kernel: c01395c1
Jan 27 08:18:10 fraggle kernel: *pde = 00000000
Jan 27 08:18:10 fraggle kernel: Oops: 0002
Jan 27 08:18:10 fraggle kernel: joydev floppy sr_mod es1371 ac97_codec
gameport soundcore parport_pc lp parport sd_mod ide-cd cdrom ide-scsi
scsi_mod autofs ppp_synctty ppp_async ppp_generic
Jan 27 08:18:10 fraggle kernel: CPU:    0
Jan 27 08:18:10 fraggle kernel: EIP:    0060:[<c01395c1>]    Not tainted
Jan 27 08:18:10 fraggle kernel: EFLAGS: 00010012
Jan 27 08:18:10 fraggle kernel:
Jan 27 08:18:10 fraggle kernel: EIP is at kmem_cache_free [kernel]
0x41 (2.4.22-1.2163.nptl)
Jan 27 08:18:10 fraggle kernel: eax: 00000000   ebx: da0fd000   ecx:
01b45da2   edx: 00000001
Jan 27 08:18:10 fraggle kernel: esi: dbf72eac   edi: 00000282   ebp:
c12343e0   esp: dbf65f10
Jan 27 08:18:14 fraggle kernel: ds: 0068   es: 0068   ss: 0068
Jan 27 08:18:20 fraggle kernel: Process kswapd (pid: 5,
stackpage=dbf65000)
Jan 27 08:18:31 fraggle kernel: Stack: da2ed140 da2ed140 da2ed140
c01454b7 dbf72eac da2ed140 c014784d da2ed140
Jan 27 08:18:41 fraggle kernel:        00000000 c12343e0 c033c298
0000436c c013a6b7 c12343e0 000001d0 dbf64000
Jan 27 08:18:46 fraggle kernel:        00000c13 000001d0 00000013
00000020 000001d0 c033c298 c033c298 c013a8ed
Jan 27 08:18:50 fraggle pppd[20510]: Child process /usr/sbin/pppoe -p
/var/run/pppoe-adsl.pid.pppoe -I eth0 -T 80 -U  -m 1412    (pid 20511)
terminated with signal 11
Jan 27 08:18:50 fraggle kernel: Call Trace:   [<c01454b7>]
__put_unused_buffer_head [kernel] 0x57 (0xdbf65f1c)
Jan 27 08:18:59 fraggle kernel: [<c014784d>] try_to_free_buffers
[kernel] 0x5d (0xdbf65f28)
Jan 27 08:19:00 fraggle kernel: [<c013a6b7>] shrink_cache [kernel]
0x2d7 (0xdbf65f40)
Jan 27 08:19:01 fraggle kernel: [<c013a8ed>] shrink_caches [kernel]
0x3d (0xdbf65f6c)
Jan 27 08:19:01 fraggle kernel: [<c013a963>] try_to_free_pages_zone
[kernel] 0x53 (0xdbf65f80)
Jan 27 08:19:01 fraggle kernel: [<c013aafe>] kswapd_balance_pgdat
[kernel] 0x5e (0xdbf65fa4)
Jan 27 08:19:02 fraggle kernel: [<c013ab59>] kswapd_balance [kernel]
0x19 (0xdbf65fbc)
Jan 27 08:19:02 fraggle kernel: [<c013ac8d>] kswapd [kernel] 0x9d
(0xdbf65fcc)
Jan 27 08:19:02 fraggle kernel: [<c013abf0>] kswapd [kernel] 0x0
(0xdbf65fe4)
Jan 27 08:19:02 fraggle kernel: [<c010719d>] kernel_thread_helper
[kernel] 0x5 (0xdbf65ff0)
Jan 27 08:19:02 fraggle kernel:
Jan 27 08:19:02 fraggle kernel:
Jan 27 08:19:02 fraggle kernel: Code: 89 44 8b 18 8b 53 10 89 4b 14 8d
42 ff 85 c0 89 43 10 74 39

This machine is never rebooted and each morning at logon, Oops. Don't
know really why but i must reboot the box to "revive" it ...

An idea ? Please :) ACPI related ? must disable maybe to test.

This is a shot in the dark, but what the heck?  I had kernel opps
every 1 to 5 minutes with FC1 once I turned on ipchains (not iptables)
with pppoe (which I noticed in your oops text).  The box I set up was
perfectly stable for the first 48 hours after install, then when I
tried to use it to replace my home ADSL router it crapped out on me. 
I tried to use my ipchains based firewall from my existing RH9 based
router.  Once I switched to iptables, everything worked fine.  AS far
as I could tell, I only had problems when my ipchains firewall AND
pppoe were both running AND traffic was going between eth0 and ppp0
(eth1).

Sorry for the late reply,

it's ACPI related, booting with acpi=no and stopping acpid deamon
cured the Oops. The Oops occured after "resuming" the system each morning.

Pb solved.

the oops above should have been fixed in the VM updates that went in
circa the 2163 kernel.