Apple has released AirPort Utility 6.3.1 for Mac, which tackles a lone problem where some AirPort base stations failed to appear in AirPort Utility. It’s available via the Mac App Store, Software Update, and Apple’s support site. Additionally, version 1.3.1 of Airport Utility for iOS has also been released to tackle the same issue. (Free, 21.4 MB)
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.