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Apple releases Mac OS X 10.5.6

Latest batch of improvements for Mac OS X Leopard fixes a syncing issue with MobileMe service and improves security of several applications and OS components.

Fire up Software Update to get the latest update to Mac OS X Leopard. Josh Lowensohn/CNET

MobileMe syncing improvements and security fixes headline the list of changes unveiled with the release of Apple's Mac OS X 10.5.6 update Monday.

The file should be appearing in the Software Update window at any moment now, depending on how often you've set Software Update to check for new software. The sixth update to Leopard, originally released in October 2007, comes with the usual range of tweaks, bug fixes, and security improvements.

One update of note concerns MobileMe, which is now capable of pushing updates made to calendars or contact information from the Web or an iPhone to the primary Mac within a minute. Apple had numerous problems with the launch of the MobileMe service earlier this year, and the latest update should help fix one of the more pressing issues still outstanding with the $99-a-year service.

A full list of the issues addressed with 10.5.6 can be found here, while a list of the security improvements should appear here relatively soon. If you want to download the update from Apple's Web site, go here, but the Software Update function is the easiest way to get updated.