This was strange but it’s worth snagging.

On Tuesday, Apple released stability fixes for the client and server versions of its Mac OS X 10.6.3 operating systems via its Mac OS X 10.6.3 v1.1 Supplemental Update. The update, which can be found here, is intended for users who have updated to Mac OS X 10.6.3 directly from Mac OS X 10.6 using the recently issued Mac OS X Update Combined 10.6.3 for Snow Leopard. Users who updated from either Mac OS X 10.6.1 or 10.6.2 to 10.6.3 do not need to install this update.

Per Macworld, the update includes many of the same improvements in Mac OS X 10.6.3, such as updates to QuickTime X, OpenGL-based apps, coloring messages in Mail, and printing reliability. It also addresses issues with opening files with some special characters in Rosetta apps, color problems with HD content in iMovie, recurring events in iCal when connected to an Exchange server, and it improves performance of Logic Pro 9 and Main Stage 2 under 64-bit mode.

The Mac OS X 10.6.3 v1.1 update is available from Apple’s support download site as a 785MB combo updater; there’s also a 897MB combo update for Mac OS X Server 10.6.3 v1.1.

As always, if you’ve tried the update and noticed any significant changes (for better or for worse), feel free to hurl your two cents in.