A spate of problems has cropped up with rogue SSL/TLS certificates that have the potential to subvert the integrity of encrypted Internet communications. Over at Macworld, Glenn Fleishman explains the situation, and offers advice to Mac OS X users on how to put up their guard for the system and browsers. follow link
Keyboard Shortcuts in Stacks
You aren't limited to using the mouse or trackpad to select items within a stack. Once you've clicked a stack to open it, you can type a letter to jump to the first file starting with that letter, or press either the Tab or arrow keys to move among the stack's contents. Press Return to open the selected item.
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Secure Your Mac from Certificate Flaws