AirPort Software Update 3.3.1 Released - Apple posted an update for owners of AirPort Extreme cards and base stations that fixes a troublesome bug that could cause a kernel panic when switching network locations. The update is a free 1 MB download via Software Update or from Apple's Web site. [JLC]
Go Back and Forth Fast in Preview
If you're reading a PDF in Apple's Preview software, and you follow a bookmark or an internal link to move around within the PDF, you can quickly return to where you were by pressing the keyboard shortcut Command-[ (that's Command-Left Bracket). Or, you can choose Go > Back.
The command works iteratively, so you can go back to just the previously viewed page or if you issue the command again, to the page before that, and so on. There's also an equivalent Go > Forward (Command-]).