System Preferences Loosing Keyboard Shortcuts

Question

I have noticed that from time to the keyboard shortcuts I have enabeled(F9-F12 for the Dashboard and Expose) and the mighty mouse buttons set for dashboard and Expose all windows will revert to the defalt settings if unassigned. For the Fkeys this means they do nothing and the mouse reverts back to button 3 and 4. Can someone tell me what causes this, and how I can stop it, because while it dosnt cause me any major problems it is annoying.

Answer 1

I have this same problem. Hopefully someone will help us soon.
I was watching a DVD (MirrorMask) when my computer crashed. The whole top to bottom wipe thing happened and it told me I needed to hold the power button and restart. After restarting, however, I could no longer control the volume or brightness controls on the keyboard, use my eject key, and my apple remote won't work for those things either. I know these keys, as well as the remote, are all getting signals just fine because I can still use them to do various other things like refresh pages in internet explorer or wake the computer from Sleep mode. It's almost as though it doesn't believe it's a newer version mac with those features anymore.
I've tried messing around in the System Preferences as well. Checking the "Use F1 - F12 buttons to control hardware features" box does nothing to help the situation. Holding control, fn, alt, or option keys and pressing any of the keys merits no positive response either.