Apple releases Mac OS 10.5.5

Apple releases Mac OS 10.5.5

Summary: Apple today released Mac OS 10.5.5 via Software Update.


Apple releases Mac OS 10.5.5Apple today released Mac OS 10.5.5 via Software Update. The 136MB updated comes with 33 fixes for the following components:

  • Address Book
  • Disk Utility
  • iCal
  • Mail
  • MobileMe
  • Time Machine

Knowledge Base article HT2405 has the details, which are also after the jump.

As usual I recommend waiting at least 72 hours and performing a full backup of your hard drive before performing any system software upgrades.

To the brave that don't head my warning, what are you finding?


  • Includes recent Apple security updates.
  • Addresses stability issues with video playback, processor core idling, and remote disc sharing for MacBook Air.
  • Addresses an issue in which some Macs could unexpectedly power on at the same time each day.
  • Resolves a stability issue in TextEdit that could be found when accessing the color palette.
  • Improves Spotlight indexing performance.
  • Fixes an issue in which contacts might not sync properly with PalmOS-based devices.
  • Improves iPhone sync reliability with iCal and Address Book.
  • Includes improvements to Active Directory (see this article for more information).
  • Improves Speech Dictionary.
  • Fixes Kerberos authentication issues for Mac OS X 10.5 clients that connect to certain Samba servers, such as Mac OS X Server version 10.4.
  • Includes extensive graphics enhancements.

Address Book

  • Addresses stability issues that may occur when creating a Smart Group.
  • Resolves a printing issue with address cards containing information that spans more than one page.

Disk Utility and Directory Utility

  • Improves reliability when rebuilding a software mirror RAID volume in Disk Utility.
  • Improves reliability of server status displayed in Directory Utility.


  • Updates iCal to more accurately handle repeating events.
  • Improves performance when choosing meeting attendees.
  • Resolves an issue in which the "Refresh All" option may be dimmed ("grayed out") in the contextual menu for certain calendars.
  • Fixes issues with read-only calendars.
  • Addresses an issue that prevents an invitee from moving an event to a different calendar.
  • Resolves an issue with syncing published calendars.


  • Addresses performance issues related to displaying IMAP messages.
  • Resolves an issue with SMTP settings for AIM, Compuserve, Hanmail, Yahoo!, and Time Warner Road Runner email accounts.
  • Addresses stability issues that may occur when dragging a file to the Mail icon in the Dock.
  • Addresses an issue with the "Organized by Thread" view in which the date does not appear when the thread is collapsed.
  • Resolves an issue in which RSS feeds could temporarily disappear from the sidebar.
  • Improves Mail robustness when sending messages.
  • Improves reliability when saving drafts that have attachments.


  • Improves overall sync reliability.
  • Improves Back to My Mac reliability.

Time Machine

  • Improves Time Machine reliability with Time Capsule.
  • Addresses performance issues that may affect initial and in-progress backups.
  • Fixes an issue in which an incorrect alert message could appear stating that a backup volume does not have enough free space.
  • Time Machine can now back up iPhone backups that are on your Mac, as well as other items in (~/Library/Application Support).

Topics: Software, Apple, CXO, Data Management, Hardware, Operating Systems, Storage, IT Employment

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  • Updated on my MacBookPro with no problems.

    I have updated my MacBookPro yesterday and I didn't experience any problems. Remember that 10.5.5 update will require two reboots, at least that what I experienced on my MacBookPro.
    I have used my MacBookPro with my normal applications and I didn't any issues yet.
    I also update my 10.4.11 systems which are iMac G5, PowerMac G5, PowerBook G4 without problems also.
    I'll update this if I see any unusual things but nothing now.
  • RE: Apple releases Mac OS 10.5.5

    I updated this morning and OpenOffice 2.4.1 no longer loads. Anyone know if anything changed with X11?
    • RE: Apple releases Mac OS 10.5.5

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  • RE: Apple releases Mac OS 10.5.5

    136MB? There were three updates for a total of 321Mb. Is this saying that the other two items total 185MB?

    Well all loaded ok and it did go through two boots, which scared the hell out of me. So, when you see your Mac boot twice, don't freak.
  • RE: Apple releases Mac OS 10.5.5 - MS Win networking problems

    I update my MacBook pro and now can no longer access any of the several MS Windows computers on our network! Not even the famous Apple afp://<IP address> will work in the Go to Server!
    Has anyone else experienced this?
    It is astounding to me how many networking problems the Macintosh has when communicating with Windows computers!
    • RE: Apple releases Mac OS 10.5.5

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  • RE: Apple releases Mac OS 10.5.5

    Yes have the exact same problem - after installing 10.5.5
    update, can't connect to all MS computers via finder.

    If you have the exact IP you can via the "GO" menu, but it still
    won't in finder.

    I'm currently talking to an apple specialist, will update this
    further ASAP.