Update 10.5.6 Still Under Development: Progress Report

While anticipation was high for the release of Mac OS X 10.5.6, potentially expected by November 21, it appears that developers will need more time to refine the update, as reported by Ars Technica.

Apple has requested that testers of the new build, numbered 9G52, focus on evaluating MobileMe’s automatic syncing capabilities, especially under conditions of varying network speeds and bandwidth limitations. This suggests ongoing efforts to enhance the reliability of MobileMe services, which have been criticized for inconsistent performance.

Additionally, Apple is seeking feedback from users who operate in non-Latin script environments, including languages such as Hangul, Kototeri, Traditional Chinese, Cyrillic, Hebrew, and Arabic, particularly within its Mail application.

Despite these areas needing attention, the update is set to resolve over 100 existing problems.

Details on these fixes are provided in the latter part of this coverage.

While there is no confirmed release date for the update, patience is advised. Echoing a familiar wisdom, “it’ll be ready when it’s finished.”

For those interested in the specific changes, they have been detailed by hmbt.org, though their website is currently experiencing slow response times.

Focus Areas with Additional Information

MobileMe / Syncing:

Testers are encouraged to assess the automatic syncing feature of MobileMe, particularly on laptops and in networks with significant latency or limited bandwidth.

Issues should be documented in the ~/Library/Logs/Sync/dotmacsync.log and reported accordingly.

For those using systems behind corporate firewalls, feedback on syncing changes made through the me.com or MobileMe website is valuable. Observations on the timeliness of these syncs, along with any unusual or excessive syncing behaviors, should be reported.


Testing efforts from users who communicate using non-Latin scripts such as Hangul, Kotoeri, and Traditional Chinese are crucial.

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Tj Luoma

Gary is a dedicated writer for TUAW, bringing a wealth of knowledge and enthusiasm for all things Apple. With a keen eye for detail, Gary covers everything from the latest iPhone and iPad releases to in-depth reviews of the MacBook Pro and Apple Watch. His insightful articles help readers navigate the ever-evolving world of Apple technology. Gary’s expertise and clear writing make him a trusted voice in the Apple community.