Along with the announcement of the iOS 4.2 update coming Friday, Apple was hard at work helping out Mac users as well. The OS X 10.6.5 update was made available for download today and brings a fairly long list of improvements. Included are fixes for printing issues, graphics and game performance improvements, as well as several security improvements. Check your updates for the download today; a full list of improvements is listed after the break.

Full list of improvements: (courtesy of Gizmodo)

• 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 e 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.

• Improves reliability of fibre channel connections, resolving a potential Xsan volume availability issue.

• Adds RAW image compatibility for additional digital cameras.

• Security improvements.