Running Software Update today will upgrade your Mac OS X to 10.4.9. The approximately 100 MB update took just a few minutes to download and install on my iMac.
Some areas of fixes include:
- RAW camera support
- Handling of large or malformed images that could cause crashes
- Image capture performance
- Mouse scrolling and keyboard shortcuts
- Font handling
- Playback quality, and bookmarks in DVD Player
- USB video conferencing cameras for use with iChat
- Bluetooth devices
- Browsing AFP servers
- Apple USB Modem
- Windows-created digital certificates
- Open and Print dialogs in applications that use Rosetta on Intel-based Macs
- Time zone and daylight saving for 2006 and 2007
- Security updates
For more information on the update, get it straight from the source - Apple.

