Macrumors reports that:
Apple released the Mac OS X 10.5.3 update today. The latest update to Leopard should appear in your Mac OS X Software Update.
The 10.5.3 Update is recommended for all users running Mac OS X Leopard and includes general operating system fixes that enhance the stability, compatibility and security of your Mac.
For detailed information on this update, please visit this website: http://support.apple.com/kb/HT1141.
For detailed information on security updates, please visit this website: http://support.apple.com/kb/HT1222.
Apple details the many fixes in their support document.
- Addresses an issue with stuttering video and audio playback in