I can confirm that this has been reported upstream on LKML.
http://groups.google.ca/group/linux.kernel/browse_thread/thread/95011ce085f7d230/831e4788f0f35dec
** Changed in: linux-source-2.6.15 (Ubuntu)
Status: Unconfirmed => Confirmed
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APIC error on Compaq Presario V2xxx
https://launchpad.net/bugs/31526