10.4.7 Upgrade, No volume/brightness control via keyboard

Hi all,
My 10.4.7 update seems to have passed with minimal problems. The exception is loss of volume and screen brightness adjustment via the keyboard.
Does anyone know from where this problem may be coming? Anybody with similar symptoms?
I'm going to try permissions repair and a reboot.
Thanks.
TiBook G4

This fix comes from someone else in this forum and it worked for me. I am just passing it along in the hopes it will solve your issue.
Remove the preferences file, $HOME/Library/Preferences/com.apple.BezelServices.plist
Logout of the system.
I found that I had to logout rather than reboot for the above fix to work correctly.
Thanks goes to the person that originally gave this suggestion.
Hope this helps!

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