Dock Slider Grayed Out
I have a problem with several Mac book computers at our local elementary school. It seems like approximately 1/3 of our MacBooks are experiencing this problem. Any time you go into System Preferences --> Dock the size slider is grayed out. There's no way to move this slider up or down. This is on both standard user account and administrator account.
Is there any way to change this? Is there a preference list file that could be audited or changed to allow the Dock to be resized again?
Thanks for any help you may provide.
MacBook, Xserve G5, PowerMac G5, Mac OS X (10.5.8)