Symptom
The computer does not go to sleep when idle.
Note: The affected Apple file service may be called "File Sharing" or "Personal File Sharing", depending on the version of Mac OS X installed. This does not refer to other sharing services offered by Mac OS X, such as Web Sharing, Windows File Sharing, or FTP.
Solution
The computer will only idle to sleep when file sharing is off. When file sharing is on, you may force the computer to sleep by choosing Sleep from the Apple menu.
File sharing is turned on or off in the Sharing pane of System Preferences.
You may avoid the issue by updating to Mac OS X 10.2.3 or later. See technical document 107263, "
Mac OS X: About the Mac OS X 10.2.3 Update".