Public bug reported:

I'm not sure if this a repeat, but I've looked and can't find anything
like this.  I get a trace msg when I reboot.  I've tried  adding 'lapic'
to the command in GRUB, but that doesn't make a difference.  I upgraded
from Jaunty and had no problem, I did a clean install and had problems.
Not sure what this trace msg means.  I've attached a file with the trace
msg from Dec 29.  I've looked in my logs and can't find anything later.

t...@tony-laptop:~$ lsb_release -rd
Description:    Ubuntu 9.10
Release:        9.10

Linux tony-laptop 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31
UTC 2009 i686 GNU/Linux

Dec 29 07:51:26 tony-laptop kernel: [    0.004305] ------------[ cut here 
]------------
Dec 29 07:51:26 tony-laptop kernel: [    0.004318] WARNING: at 
/build/buildd/linux-2.6.31/arch/x86/kernel/apic/apic.c:247 
native_apic_write_dummy+0x33/0x40()
Dec 29 07:51:26 tony-laptop kernel: [    0.004322] Hardware name: CF-29H4LGBBM
Dec 29 07:51:26 tony-laptop kernel: [    0.004325] Modules linked in:
Dec 29 07:51:26 tony-laptop kernel: [    0.004331] Pid: 0, comm: swapper Not 
tainted 2.6.31-17-generic #54-Ubuntu
Dec 29 07:51:26 tony-laptop kernel: [    0.004335] Call Trace:
Dec 29 07:51:26 tony-laptop kernel: [    0.004346]  [<c01450fd>] 
warn_slowpath_common+0x6d/0xa0
Dec 29 07:51:26 tony-laptop kernel: [    0.004352]  [<c011d763>] ? 
native_apic_write_dummy+0x33/0x40
Dec 29 07:51:26 tony-laptop kernel: [    0.004357]  [<c011d763>] ? 
native_apic_write_dummy+0x33/0x40
Dec 29 07:51:26 tony-laptop kernel: [    0.004363]  [<c0145145>] 
warn_slowpath_null+0x15/0x20
Dec 29 07:51:26 tony-laptop kernel: [    0.004368]  [<c011d763>] 
native_apic_write_dummy+0x33/0x40
Dec 29 07:51:26 tony-laptop kernel: [    0.004376]  [<c011279c>] 
intel_init_thermal+0xac/0x1a0
Dec 29 07:51:26 tony-laptop kernel: [    0.004382]  [<c0111dcb>] 
mce_intel_feature_init+0xb/0x60
Dec 29 07:51:26 tony-laptop kernel: [    0.004387]  [<c010fd00>] 
mce_cpu_features+0x10/0x40
Dec 29 07:51:26 tony-laptop kernel: [    0.004395]  [<c056b14c>] 
mcheck_init+0x14a/0x188
Dec 29 07:51:26 tony-laptop kernel: [    0.004400]  [<c0569598>] ? 
init_hypervisor+0xb/0x2c
Dec 29 07:51:26 tony-laptop kernel: [    0.004406]  [<c0569550>] 
identify_cpu+0x20e/0x21d
Dec 29 07:51:26 tony-laptop kernel: [    0.004413]  [<c0795732>] 
identify_boot_cpu+0xd/0x23
Dec 29 07:51:26 tony-laptop kernel: [    0.004419]  [<c07958c8>] 
check_bugs+0xb/0xe9
Dec 29 07:51:26 tony-laptop kernel: [    0.004426]  [<c078e8c3>] 
start_kernel+0x2dc/0x2ec
Dec 29 07:51:26 tony-laptop kernel: [    0.004431]  [<c078e406>] ? 
unknown_bootoption+0x0/0x1ab
Dec 29 07:51:26 tony-laptop kernel: [    0.004437]  [<c078e07c>] 
i386_start_kernel+0x7c/0x83
Dec 29 07:51:26 tony-laptop kernel: [    0.004449] ---[ end trace 
a7919e7f17c0a725 ]---

** Affects: ubuntu
     Importance: Undecided
         Status: New

-- 
Karmic reboot trace
https://bugs.launchpad.net/bugs/503203
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