Update for Snow Leopard: 10.6.2 is out! MacStories lists the full changelog:
The 10.6.2 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 for:
- an issue that might cause your system to logout unexpectedly;
- a graphics distortion in Safari Top Sites;
- Spotlight search results not showing Exchange contacts;
- a problem that prevented authenticating as an administrative user;
- issues when using NTFS and WebDAV file servers;
- the reliability of menu extras;
- an issue with the 4-finger swipe gesture;
- an issue that causes Mail to quit unexpectedly when setting up an Exchange server;
- Address Book becoming unresponsive when editing;
- a problem adding images to contacts in Address Book;
- an issue that prevented opening files downloaded from the Internet;
- Safari plug-in reliability;
- general reliability improvements for iWork, iLife, Aperture, Final Cut Studio, MobileMe, and iDisk;
- an issue that caused data to be deleted when using a guest account.