General fixes and improvements with 10.6.5
You may download standalone installer with this link
*Improves reliability with Microsoft Exchange servers.
*Addresses performance of some image-processing operations in iPhoto and Aperture.
*Addresses stability and performance of graphics applications and games.
*Resolves a delay between print jobs.
*Addresses a printing issue for some HP printers connected to an AirPort Extreme.
*Resolves an issue when dragging contacts from Address Book to iCal.
*Addresses an issue in which dragging an item from a stack causes the Dock to not automatically hide.
*Resolves an issue in which Wikipedia information may not display correctly in Dictionary.
*Improves performance of MainStage on certain Macs.
*Resolves spacing issues with OpenType fonts.
*Improves reliability with some Bluetooth braille displays.
*Resolves a VoiceOver issue when browsing some websites with Safari 5.
*Improves Bluetooth pairing with Magic Trackpad.
*Resolves performance issues with third-party displays that use InstaPort technology.
*Add SSL support for transferring files with iDisk.
*Resolves an issue when opening 4-up Photo Booth pictures in Preview.
*Addresses keyboard responsiveness issues in the Dock when Spaces is turned on.
*Resolves an issue syncing Address Book with Google.
*Fixes an issue when replying to a Mail message sent by a person whose name contains certain characters such as é or ü.
*Improves performance for users bound to an Active Directory domain.
*Improves reliability of Ethernet connections.
*Systems with a Mac Pro RAID Card (Early 2009) installed can now be put to sleep. For more information, see Mac Pro RAID Card (Early 2009): Enabling system sleep. more info
*Improves reliability of fibre channel connections, resolving a potential Xsan volume availability issue.
*Adds RAW image compatibility for additional digital cameras.
*Security improvements; for information about the security content of this update, please visit this article.