2.6.24.1 acpi oops in acpi_os_release_object

Looks like 2.6.24.1.fc9 is taking an ACPI related oops:

http://www.kerneloops.org/search.php?search=acpi_os_release_object

*acpi_os_release_object
acpi_ut_update_ref_count
acpi_ut_update_object_reference
kmem_cache_free
acpi_ds_method_data_delete_all
acpi_ds_terminate_control_method
acpi_ps_parse_aml
acpi_ps_execute_method
acpi_ns_evaluate
acpi_evaluate_object
acpi_evaluate_integer
acpi_thermal_check
acpi_os_wait_semaphore
acpi_thermal_check
acpi_os_execute_deferred
acpi_os_execute_deferred
run_workqueue
worker_thread
autoremove_wake_function
worker_thread
kthread
trace_hardirqs_on_thunk
child_rip
restore_args
kthreadd
kthread
child_rip