Apple has released Java for Mac OS X 10.6 Update 12 for Mac OS X 10.6 Snow Leopard, which updates Java SE 6 to version 1.6.0_39 in order to secure systems from vulnerabilities reported in Java 1.6.0_37. If you haven’t installed the Java for Mac OS X 10.6 Update 9 or any of the subsequent releases, the update configures Web browsers to not automatically run Java and deactivates it after no app activity for an extended time. This update requires Snow Leopard 10.6.8 or Snow Leopard Server 10.6.8. It’s available via Software Update and direct download, and Apple reminds you to quit any Web browsers and Java applications before installing either one. (Free, 72.7 MB)
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-]).
Java for Mac OS X 10.6 Update 12
Set up short abbreviations which expand to larger bits of text,
such as "Tx" for "TextExpander". With the new custom keyboard,
you can expand abbreviations in any app, including Safari and