Apple has released MacBook Air SMC Firmware Update 2.0, the second system management controller update to address battery issues (see “SMC Firmware Updates for MacBook Pro, MacBook Pro Retina, and MacBook Air,” 3 October 2013). Directed at MacBook Air models released in the middle of 2013, Update 2.0 fixes a problem that caused the battery to drain more quickly than expected with the lid closed. As always with firmware updates, we recommend relying on Software Update to ensure you get the right update for your particular model. Be careful not to interrupt the update process! (Free, 804 KB, 10.8.5+)
Spin Through Toolbar View Options
Although many people never change their toolbars from the default settings, all standard toolbars on the Mac offer six states: icon only, text only, and icon and text, with all three coming in normal and small size. You can change them by choosing View > Customize Toolbar.
But there's a shortcut that makes it easier to check out each variant. Simply Command-click the toolbar lozenge at the upper right of a window, and the toolbar switches to the next view. Click it enough times, and you cycle back to the start.