Late Monday, Apple released its second maintenance update to its Mac OS X 10.6 (“Snow Leopard”) operating system. Mac OS X 10.6.2, a 473 megabyte download, offers the following fixes and changes for the following issues:

- An issue that might cause your system to logout unexpectedly.
- Graphics distortion in Safari Top Sites.
- An issue wherein 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.

Other fixes include improved video playback, fixes for performance on certain Nvidia graphics cards and assorted security updates.

As always, the update can be snagged and installed via Mac OS X’s Software Update feature.

The update requires Mac OS X 10.6 or later to install and run.

If you’ve tried the new update and noticed anything, positive or negative, please let us know in the comments.