The fifth maintenance and security update for Mac OS X 10.5 (Leopard) now packs a total of 125 code corrections, thanks to two new pre-release builds making their way to developers last week. The two distributions, weighing in at 320 MB each, are Mac OS X 10.5.5 build 9F25 and Mac OS X 10.5.5 9F29.

While build 9F25 contained no noticeable changes from the previous build (9F17), AppleInsider points out, build 9F29 “tacked on a pair of fixes, one of which tackles an issue between Macs and previously joined AirPort networks,” citing people familiar with the situation. Only one issue won't, under any circumstance, budge, despite developers' efforts. The bug is said to prevent emails from being searched properly in Apple's Mail application.

One of the most recent builds (mentioned above) seeded to developers, build 9F17, fixed a total of five issues. At the time the seed notes were made available, it was revealed that the following issues had already been resolved:

- issue with Mail Sync and TableColumns;
- issue with iCal Invitations and read-only local calendars;
- issue with ImageKit and negative longitude value labels;
- issue with Back to My Mac and mDNSResponder;
- issue with CoreAnimation and CVDisplayLink::runIOThread.

In previous seeds, Apple fixed issues with Control Elements and CoreUI, Spotlight and Time Capsule backups, as well as issues surrounding multiple TCP connections and Application Firewall. The problems occurring with Mail Sync and Preferences syncing, the Address Book Framework and Smart Groups, "set wake up times" and Power Management, and FileSync have also been resolved.

Packing a total of 125 bug fixes, and just one known issue that prevents emails from being searched properly in Mail.app, Mac OS X 10.5.5, the next maintenance and security update for Leopard users, is expected to arrive later this month.