Apple has released OS X Server 2.2.1, with the server add-on for OS X 10.8 Mountain Lion adding a couple of features in addition to some stability fixes. First up, a Caching Server has been added to improve download speeds from the Mac App Store, enabling you to download one copy of the software to your Mac running OS X Server and then distribute that copy to other connected Macs. The release also adds a Time Machine monitoring service that can check to see which computers have backed up (including information on size and time of last backup), Wiki Server support for Retina displays, and a Centralized Certificate management interface. This update fixes an issue with deleting apps uploaded to the Profile Manager, setup failures caused by an SSL error, and problems with upgrading from Lion Server. Additionally, OS X Server 2.2.1 includes a few security patches focused on closing some vulnerabilities related to Ruby on Rails. ($19.99 new, free update, 153 MB, release notes)
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.