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 -- APIC error on Compaq Presario V2xxx https://launchpad.net/bugs/31526