Problem still exists on 2.6.28-rc3:please see #11917
ACPI: EC: missing confirmations, switch off interrupt mode.
ACPI Exception (evregion-0419): AE_TIME, Returned by Handler for
[EmbeddedControl] [20080926]
ACPI Error (psparse-0524): Method parse/execution failed [\_TZ_.C31E]
(Node f7019858), AE_TIME
ACPI Error (psparse-0524): Method parse/execution failed
[\_TZ_.TZ3_._TMP] (Node f7019ed0), AE_TIME
But I don't see any functional problems.
Regards