Apple has released Server Admin Tools 10.7.5, which includes updates to its set of administration applications for use with Mac OS X 10.7 Lion Server. In particular, the Server Admin and System Image Utility tools add NetBoot/NetInstall model filters for MacBook Pro and MacBook Air (Mid 2012) models. Additionally, the System Image Utility improves reliability of booting from NetRestore images, and the Workgroup Manager correctly sets the password expiration date for Open Directory users and shows the names of members of Active Directory groups. (Free, 195.67 MB, release notes)
Sleep (and Lock) Your Screen
When you are walking away from your computer, it's fairly common practice to start your screen saver and lock your screen. But did you know that there is a built-in keyboard shortcut in Mac OS X to sleep the screen?
Press Control-Shift-Eject and your monitor sleeps without engaging the screen saver.