Apple has released OS X 10.8.4 for Mac computers today, and it fixes a host of things, including an annoying bug which caused iMessages to come in out of order in the Messages app.

There are a host of other improvements including better Microsoft Exchange support in calendar, a slightly newer version of Safari (6.0.5) and a fix for a bug that prevented Facetime calls to international numbers.

The update is available via the Mac App Store and is also available for direct download from Apple’s support site here. The build number is 12E55.

Here’s the full list of changes:

  • 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

This version of OS X comes just before Apple’s WWDC conference, where it is expected to preview OS X 10.9 and iOS 7.