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
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.
Secure Your Mac from Certificate Flaws