Normally I don't report on any Software Updates other than those that come through Apple's own Software Update feature, but Perian is an exception.
For those that don't know, Perian is quite simply the most useful QuickTime extension package that exists for the Mac, and is free on top of it. It adds support for (if I counted right) 31 video codecs (not all are mentioned on their website, but all are mentioned in the Read Me) that QuickTime for some reason doesn't natively support. It is controlled and distributed by/ as a preference pane. It has automatic updating software to update you, but best of all simply integrates with any QuickTime application (there are many, some you wouldn't even think of) so the extra codecs look and feel like they're native.
Earlier this afternoon the developer's of Perian released Perian 1.1.1. Though just a x.x.1 update, this update wraps in many fixes. Those are as follows (from their support site):
H.264 in AVI fixed
Some anamorphic AVI files are now supported
Performance problems due to PIC fixed with Xcode 3.1
Incorrect frame skipping on H.264 intra frames fixed
Better character set detection
The update checker is now much more polite
Several parsing and rendering bugs with subtitles fixed
Player freezing while loading subtitles with embedded fonts fixed
Audio fixed for some older MKV files with AAC/FLAC
Strange values in MKV chapters or video sizes are handled better
Initial support for SAMI subtitles added
Worked around a QuickTime bug (#5770288) causing frames to be lost during export
New codecs: DosBox ZMBV, VP6+Alpha, Nellymoser ASAO
FFmpeg:
Crashing on PPC G3 fixed
Fraps decoding artifacts fixed
Regardless if you are a new or current user of Perian it is a great QuickTime extension. So, I suggest that every QuickTime user on a Mac installs this 1.1.1 update to Perian. Enjoy, Alex.