Mac OS X 10.6.5

Mac OS X 10.6.5 was an update to Mac OS X 10.6 released on November 10, 2010. It had the following features:

General fixes and improvements
 * 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.
 * Improves reliability of fibre channel connections, resolving a potential Xsan volume availability issue.
 * Adds RAW image compatibility for additional digital cameras.
 * Security improvements.

External References
Apple: About the OS X 10.6.5 Update