Apple released an update for Mac OS X, bringing the current version of the operating system to 10.4.6. The update addresses several issues with the Finder and networking, as well as fixing problems with some Apple and third-party applications.  Read the full patch notes.  World of Warcraft Mac OS X users benefit from the update:

Third-party applications

* Resolves an issue in which Blizzard World of Warcraft character graphics could be distorted on an Intel-based Mac with a built-in graphics processor when vertex shaders are enabled.