Apple released today the newest update for OS X Mountain Lion, bringing with it a number of fixes and improvements to some pesky issues. Update 10.8.4 addresses glitches including a popular problem that would cause iMessage messages to be received out of order.

The update also brings with it some minor improvements to Safari and Microsoft Exchange support in Calendar. Here is a complete list of what’s included in the release:

  • 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

Apple doesn’t usually list every single change in its update releases, so you may find some other bugs have also been squashed.