Apple Releases Mac OS X 10.6.3 and Security Update 2010-002 - MacRumors
Skip to Content

Apple Releases Mac OS X 10.6.3 and Security Update 2010-002

123055 software update 10

Apple today released Mac OS X 10.6.3, the third maintenance update for Snow Leopard, via Software Update and the company's software downloads page. The update offers several hundred fixes implemented since the release of Mac OS X 10.6.2 last November and an interim security update issued in January.

The 10.6.3 Update is recommended for all users running Mac OS X Snow Leopard and includes general operating system fixes that enhance the stability, compatibility, and security of your Mac, including fixes that:

- improve the reliability and compatibility of QuickTime X
- address compatibility issues with OpenGL-based applications
- address an issue that causes background message colors to display incorrectly in Mail
- resolve an issue that prevented files with the # or & characters in their names from opening in Rosetta applications
- resolve an issue that prevented files from copying to Windows file servers
- improve performance of Logic Pro 9 and Main Stage 2 when running in 64-bit mode
- improve sleep and wake reliability when using Bonjour wake on demand
- address a color issue in iMovie with HD content
- improve printing reliability
- resolve issues with recurring events in iCal when connected to an Exchange server
- improve the reliability of 3rd party USB input devices
- fix glowing, stuck, or dark pixels when viewing video from the iMac (Late 2009) built-in iSight camera

Full details on the update are available in Apple's associated support document.

Developer builds of Mac OS X 10.6.3 were seeded with increasingly frequency in recent weeks, with the most recent, Build 10D573, appearing just last Wednesday.

- Mac OS X v10.6.3 Update (719.23 MB)
- Mac OS X v10.6.3 Update (Combo) (784 MB)
- Mac OS X Server v10.6.3 Update (831.31 MB)
- Mac OS X Server v10.6.3 Update (Combo) (897.32 MB)

Apple has also released Security Update 2010-002 for users on Mac OS X 10.5 Leopard.

- Security Update 2010-002 (Leopard-Client) (78.39 MB)
- Security Update 2010-002 (Leopard-Server) (361.40 MB)

Popular Stories

Apple iCloud Plus expansion hero

iCloud+ Now Includes Apple TV, Apple Arcade, and Curated Apple Music Stations in Over 100 Countries

Tuesday September 15, 2026 1:43 am PDT by
Apple today announced a new subscription initiative that turns paid iCloud+ subscriptions into a broader services bundle in more than 100 countries. In select countries, Apple says every paid iCloud+ plan, including the cheapest 50GB tier, now includes Apple TV and Apple Arcade "at no additional cost," while family sharing extends the storage, TV and Arcade access to up to five people....
Everything New Your iPhone Can Do on iOS 27 Feature 1

50 New Things Your iPhone Can Do in iOS 27 - Out Now!

Monday September 14, 2026 10:48 pm PDT by
Apple released iOS 27 this week, and despite the company's focus this year on refining its flagship operating system and nixing bugs, there are still many additional features to explore, not least of which is Apple's new context-aware Siri, re-tooled for the generative AI era. Which iPhones Support Every iOS 27 Feature? This year's major iPhone software update isn't all about AI, though,...
iOS 27 Icon iPhone

iOS 27 Available Now With These 8 New Features

Monday September 14, 2026 9:00 am PDT by
Update — 10 a.m. Pacific Time: Apple has released iOS 27. During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update. Below, we have highlighted eight new features and...