The latest update to Mac OS X, in testing since the beginning of August, is now available for your downloading pleasure. As usual, the OS X 10.5.5 update is "recommended for all users," and "includes general operating system fixes that enhance the stability, compatibility and security of your Mac."
The fixes include improvements to MacBook Air performance, iPhone and PalmOS synching, Time Machine and Time Capsule reliability, Mail IMAP and SMTP compatibility, and tweaks to iCal and Address Book. The update also improves MobileMe syncing, Disk Utility, Speech Dictionary, and Kerberos authentication with some Samba servers. Apple claims that there are extensive graphics fixes, though no details are given as to what that might mean. And Spotlight indexing performance is improved, though our own David Chartier notes that after the update, Spotlight will re-index your entire volume, so you may want to hold off until any performance critical tasks are done for the day. An update for Mac OS X Server to 10.5.5 is available as well, including numerous fixes for the included server software in addition to other fixes.
In addition to the performance and reliability improvements, though, this update includes numerous security fixes. Several fixes are included for dealing with images in TIFF, JPEG, PNG, and PICT formats. Several components are updated to further protect against DNS cache poisoning, including BIND, mDNSresponder, and libresolv. Other security fixes are detailed in Apple's KB article. A separate update for Mac OS X 10.4.11 includes these security fixes for that OS version.
As usual, the updates are available via Software Update. They don't yet appear on Apple's Support Downloads at publish time, but should be available shortly.
UPDATE: Individual downloads for 10.5.5 client and server, as well as Security Update 2008-006, are now available from Apple's Support Downloads page.Posted on