Apple has released iTunes 9.2.1 to fix a number of bugs, addressing some minor unspecified issues with drag-and-drop, disabling some older incompatible third-party plug-ins, resolving performance problems that can occur on the first sync of a new device with iTunes 9.2, and fixing a bug triggered by upgrading an iPhone or iPod touch to iOS 4 with encrypted backups. Finally, the update addresses a critical security vulnerability. iTunes 9.2.1 is available via Software Update and the Apple Support Downloads page. (Free, 101.82 MB)
Find Your Mac's Serial Number
Want to check your Mac's serial number quickly and easily? Select About This Mac from the Apple menu, and click on the text directly below "Mac OS X" that reads "Version 10.x.x." Click once and you'll get a build number which is more specific information about the software. Click twice, and you'll get your Mac's serial number.
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