Problem persists on latest Kernel:

Linux ubuntu 2.6.35-24-generic #42-Ubuntu SMP Thu Dec 2 01:41:57 UTC
2010 i686 GNU/Linux

dmesg | grep -i error
[    0.185114] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, 
AE_ALREADY_EXISTS
[    0.185128] ACPI Error (psparse-0537): Method parse/execution failed 
[\_SB_.PCI0._OSC] (Node f70205e8), AE_ALREADY_EXISTS
[    0.185143] ACPI: Marking method _OSC as Serialized because of 
AE_ALREADY_EXISTS error
[    0.189943] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, 
AE_ALREADY_EXISTS
[    0.189956] ACPI Error (psparse-0537): Method parse/execution failed 
[\_SB_.PCI0._OSC] (Node f70205e8), AE_ALREADY_EXISTS
[    0.307835] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, 
AE_ALREADY_EXISTS
[    0.307850] ACPI Error (psparse-0537): Method parse/execution failed 
[\_SB_.PCI0._OSC] (Node f70205e8), AE_ALREADY_EXISTS
[    0.308116] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, 
AE_ALREADY_EXISTS
[    0.308129] ACPI Error (psparse-0537): Method parse/execution failed 
[\_SB_.PCI0._OSC] (Node f70205e8), AE_ALREADY_EXISTS
[    0.308412] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, 
AE_ALREADY_EXISTS
[    0.308424] ACPI Error (psparse-0537): Method parse/execution failed 
[\_SB_.PCI0._OSC] (Node f70205e8), AE_ALREADY_EXISTS
[    0.308669] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, 
AE_ALREADY_EXISTS
[    0.308682] ACPI Error (psparse-0537): Method parse/execution failed 
[\_SB_.PCI0._OSC] (Node f70205e8), AE_ALREADY_EXISTS
jerr...@ubuntu:~$ ^C

** Changed in: linux (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/376367

Title:
  Repeated ACPI Errors and Exceptions in Log Files

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