Getting its ducks in a row before some upcoming OS X updates become available, C-Command Software has released SpamSieve 2.9.3, which adds support for the forthcoming Mac OS X 10.7.5. The latest release of the spam-filtering software fixes a bug that prevented the app from auto-launching on the soon-to-be released 10.8 Mountain Lion, as well as improves recovery from certain “unexpected” system errors. The update also improves instructions for automatically deleting old spam messages, enables use of the system’s integrated GPU to help reduce battery use on the latest MacBook Pro models, and fixes a layout bug in the German-localized Statistics window. ($30 new, free update, 10 MB, release notes)
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-]).