[CentOS] ACPI Power Off called.

I know this mesage is quite common, but i do get this at shutdown.
(Discussed many times on the forums as such.) But still, please
provide a "quickfix"

acpi power off called, 
and then the computer simply stays on there, and doesn't shutdown.
can anybody help me find a quick fix for this?
I am in quite a hurry at the moment, and need urgent help.



Thanks .
-- 
"No-one dies a virgin. Life screws everyone."