The /var/log/messages file could have slowly filled up with error messages similar to the following:
ACPI Error: Illegal I/O port address/length above 64K: 0x0000000000400020/4 (20090903/hwvalid-154)
ACPI Exception: AE_LIMIT, Returned by Handler for [SystemIO] (20090903/evregion-424)
ACPI Error (psparse-0537): Method parse/execution failed [\_GPE._L09] (Node ffff8800797cd298), AE_LIMIT
ACPI Exception: AE_LIMIT, while evaluating GPE method [_L09] (20090903/evgpe-568)
This error message no longer occurs with this update.