- 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
You can find the full list of fixes in this Apple Knowledge Base article.
While I personally have only seen the first two issue pop up, I’ve read reports on many of the others. Let’s hope that this truly resolves those issues. You can do the incremental update by going to the “Software Update…” option in the Apple Menu, but we generally recommend using the Combo Updater, which can be found at Apple’s Web Site.