I have attached the dmesg log captured soon after a bootup.
I am using a fixed DSDT for the Ferrari 4005 (which I fixed myself).

[NOTE: While looking over the log file it eventually filled up the dmesg
buffer, but I noticed the "many lost ticks" warning at the end]

A quick analysis shows these interesting entries:

[   19.151590] PCI: No mmconfig possible on device 0:18
..
[   19.222130] PCI: Bus #07 (-#0a) is hidden behind transparent bridge #06 
(-#07) (try 'pci=assign-busses')
[   19.222133] Please report the result to linux-kernel to fix this permanently
..
[   20.242636] pnp: PnP ACPI init
[   20.243507] pnp: PnPACPI: METHOD_NAME__CRS failure for PNP0a03
[   20.246577] pnp: PnP ACPI: found 11 devices
[   20.246618] PCI: Using ACPI for IRQ routing
[   20.246621] PCI: If a device doesn't work, try "pci=routeirq".  If it helps, 
post a report
[   20.246748] PCI-DMA: Disabling IOMMU.
..
[   20.285270] PCI: Setting latency timer of device 0000:00:02.0 to 64
[   20.285275] pcie_portdrv_probe->Dev[5a34:1002] has invalid IRQ. Check vendor 
BIOS
[   20.285290] assign_interrupt_mode Found MSI capability
[   20.285330] Allocate Port Service[0000:00:02.0:pcie00]
[   20.285363] Allocate Port Service[0000:00:02.0:pcie01]
[   20.285392] PCI: Setting latency timer of device 0000:00:06.0 to 64
[   20.285395] pcie_portdrv_probe->Dev[5a38:1002] has invalid IRQ. Check vendor 
BIOS
[   20.285410] assign_interrupt_mode Found MSI capability
[   20.285430] Allocate Port Service[0000:00:06.0:pcie00]
[   20.285455] Allocate Port Service[0000:00:06.0:pcie01]..
..
[   26.887398] irq 233: nobody cared (try booting with the "irqpoll" option)
[   26.887403]
[   26.887404] Call Trace: <IRQ> <ffffffff802b68a5>{__report_bad_irq+53}
[   26.887418]        <ffffffff802b6b20>{note_interrupt+544} 
<ffffffff802b6190>{__do_IRQ+224}
[   26.887428]        <ffffffff802737e2>{do_IRQ+66} 
<ffffffff80265d08>{ret_from_intr+0} <EOI>
[   26.887437]        <ffffffff802089ff>{__handle_mm_fault+1391} 
<ffffffff8026b578>{_spin_unlock_irqrestore+8}
[   26.887447]        <ffffffff8026d989>{do_page_fault+1273} 
<ffffffff8026580e>{system_call+126}
[   26.887459]        <ffffffff802664a1>{error_exit+0}
[   26.887467] handlers:
[   26.887469] [<ffffffff8810c0c0>] (ohci_irq_handler+0x0/0x7ff [ohci1394])
[   26.887480] Disabling IRQ #233
..
[   39.748618] APIC error on CPU0: 00(40)
[   39.820528] Losing some ticks... checking if CPU frequency changed.
..
[   85.542940] ibm_acpi: ec object not found
[   85.571130] pcc_acpi: loading...
..
[   93.860670] ttyS0: LSR safety check engaged!
..
[   95.185772] ttyS1: LSR safety check engaged!
..
[  514.657380] APIC error on CPU0: 40(40)
[  514.658974] warning: many lost ticks.
[  514.658975] Your time source seems to be instable or some driver is hogging 
interupts
[  514.658991] rip acpi_processor_idle+0x1d9/0x466 [processor]
[  514.662171] APIC error on CPU0: 40(40)


** Attachment added: "Output of dmesg shortly after a clean bootup"
   http://librarian.launchpad.net/4930938/dmesg.txt

-- 
APIC error on CPU0: 40(40)
https://launchpad.net/bugs/66900

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