Why is wake computer from bluetooth greyed out?

I am using an Apple wireless keyboard and mouse with the latest firmware upgrade and system 10.4.5. My "wake up computer from bluetooth devise" option is grayed out in my system preferences. Any idea how to fix this?

Hi, Kevin.
See "What to do if 'Allow Bluetooth devices to wake this computer' option is not available."
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X

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