If you use OS X Server, it's time to fire up Software Update. Apple has just released version 2.2.1 of its server add-on for Mountain Lion, bringing with it a number of updates, fixes and even a couple of new features like a Caching Server for Mac App Store downloads and Wiki Server support for Retina MacBook Pros. You'll find the full list below:
Caching Server to speed up download of software distributed by Apple through the Mac App Store.
Time Machine service monitoring of which computers have backed up, when they last backed up and size of backup.
Wiki Server support for MacBook Pro with Retina displays.
Fix for deleting apps uploaded to Profile Manager.
Ability to use Active Di