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Update to Mac OS X 10.2.3.
You can update from a previous version of Mac OS X 10.2 by using Automatic Software Update. For more information on this feature, see technical document 106704, "Mac OS X: How to Update Your Software". Because some updates are prerequisites for others, you may need to use Software Update more than once to get all desired updates.
An installer is also available from Apple Software Downloads (http://www.apple.com/swupdates/ ).