CentOS 3.6 won't poweroff

[adi.coman at gmail.com (Adrian Coman)]

Hi,

I have a Packard Bell notebook with CentOS 3.6 installed. When I want
to turn off the computer everything goes OK until the power should be
switched off ... but the display remains turned on with the last
"power down" message on it .. until I press the button.

Is there a fix for this? The kernel is 2.4.21-37.EL .
Thanks,
Adrian