Apple Releases First Leopard Update (10.5.1) - MacRumors
Skip to Content

Apple Releases First Leopard Update (10.5.1)

Apple has released their first update to Mac OS X Leopard (10.5.1) today:

The 10.5.1 Update is recommended for all users running Mac OS X Leopard and includes general operating system fixes that enhance the stability, compatibility and security of your Mac.

Apple details the improvements in this technote. Some highlights include:

- Allows password-protected accounts on AirPort Disks to show up on in the Finder's Shared Sidebar.
- Addresses formatting issues with certain drives used with Time Machine
- Addresses a potential data loss issue when moving files across partitions in the Finder.
- Improves the reliability of Back to My Mac-enabled Macs appearing in the Finder's Shared Sidebar.

The final build number of Mac OS X 10.5.1 is indeed 9B18 as previously reported. Apple first released Mac OS X Leopard 10.5 on October 26th.

Popular Stories

Apple Watch Ultra 2 Black Titanium

New Apple Watch Series 12 and Apple Watch Ultra 4 Features Revealed

Sunday August 30, 2026 7:54 am PDT by
Bloomberg's Mark Gurman today further outlined what to expect from the Apple Watch Series 12 and Apple Watch Ultra 4 set to be unveiled on September 9. While it was initially rumored that Touch ID may be coming to the Apple Watch this year, Gurman reiterated that he does not expect the Series 12 or Ultra 4 to have any major design changes compared to the current Series 11 and Ultra 3 models. ...
Apple Event Logo

Apple Unveiled Four New Products This Week

Wednesday August 26, 2026 5:54 pm PDT by
Apple on Tuesday unveiled a new Mac mini with M6 and M5 Pro chip options, a new Mac Studio with M5 Max and M5 Ultra chip options, a new version of the Polishing Cloth with a lower price, and updated Magic Keyboards for Macs. To learn more about these products, read our coverage below: Apple Announces New Mac Mini With M6 and M5 Pro Chips and More Apple Unveils New Mac Studio With M5 Max...
imac video apple feature

September 1 to Mark the End of an Era at Apple

Tuesday August 18, 2026 9:14 am PDT by
Apple in April announced that Tim Cook will be stepping down as CEO at the end of this month, after 15 years of leading the company. Cook has been Apple's CEO since 2011 Effective September 1, Apple's hardware engineering chief John Ternus will become the company's next CEO, while Cook will become executive chairman of Apple's board of directors. In his new role, Apple said Cook will assist...