Apple have released Mountain Lion 10.8.4

Apple have released Mountain Lion 10.8.4 including the following updates:

The OS X Mountain Lion v10.8.4 Update is recommended for all OS X Mountain Lion users and includes features and fixes that improve the stability, compatibility, and security of your Mac, including the following:

• Compatibility improvements when connecting to certain enterprise Wi-Fi networks
• Microsoft Exchange compatibility improvements in Calendar
• A fix for an issue that prevented FaceTime calls to non-U.S. phone numbers
• A fix for an issue that may prevent scheduled sleep after using Boot Camp
• Improves VoiceOver compatibility with text in PDF documents
• Includes Safari 6.0.5, which improves stability for some websites with chat features and games
• A fix for an issue that may cause iMessages to display out of order in Messages
• Resolves an issue in which Calendars Birthdays may appear incorrectly in certain time zones
• A fix for an issue that may prevent the desktop background picture from being preserved after restart
• A fix for an issue that may prevent documents from being saved to a server using SMB
• Addresses an issue that may prevent certain files from opening after copied to a volume named “Home"
• A fix for an issue that may prevent changes to files made over NFS from displaying
• Resolves an issue saving files to an Xsan volume from certain applications
• Improves Active Directory log-in performance, especially for cached accounts or when using a .local domain
• Improves OpenDirectory data replication
• Improves 802.1X compatibility with ActiveDirectory networks
• Improves compatibility when using mobile accounts

New mention of new graphics drivers but apparently there are new AMD drivers and people running the beta reported support for the Nvidia Titan, the GTX780 and the GTX770 

Let me know if you install it on a system with a PC graphics card.

Cheers

Neil