Mac OS X 10.5.6 Update Available Now Through Software Update

The Mac OS X 10.5.6 Update through Software Update is available now at Apple Website. This update is recommended for Mac OS X 10.5 Leopard versions 10.5, 10.5.1, 10.5.2, 10.5.3, 10.5.4, and 10.5.5. Downloading the Mac OS X 10.5.6 Update is very easy. You will just need to choose Software Update from the Apple menu to automatically check for the latest Apple software.
The Mac OS X 10.5.6 provides improvements in different parts such as
-the reliability of AirPort connections,
-the reliability of Address Book syncing with iPhone and other devices and applications,
-Fixing an issue in Mac OS X 10.5.4 and 10.5.5 in which managed users may not see printers that use the Generic PPD,
- Fixing an issue that could cause an encryption alert to appear in the chat window,
- General improvements to gaming performance
- Graphics improvements for iChat, Cover Flow, Aperture, and iTunes
- Fixings for possible graphics distortion issues with certain ATI graphics cards
- Fixing an issue that could cause messages identified as junk to remain in the inbox.
-Fixing an issue that could cause Mail to append a character to the file extension of an attachment.
- Apple File Service performance, especially when using a home directory hosted on an AFP server. Important: If you are using Mac OS X 10.5.6 (client) to connect to a Mac OS X Server 10.4-based server, it is strongly recommended that you update the server to Mac OS X Server version 10.4.11.
… and some more. You can see the whole list of improvements and fixes here.