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)
Copy Disk Image as Folder
When you open a .dmg file, a disk image is mounted. You are then generally supposed to copy the contents of that disk image to your hard drive (to your Desktop, your Applications folder, or wherever). But what if you want to copy the whole disk image, including all its contents, as a folder? Hold the Option key, and drag the "proxy icon" in the title bar of the disk image window to the destination in the Finder.