A vulnerability in iOS 6 and OS X 10.8 Mountain Lion can crash apps and even render them unusable if certain strings of text are rendered. The text strings can cause Messages and Safari to crash, and can cause additional errors if a Wi-Fi network is named with the text. The problem is reportedly fixed in the betas of iOS 7 and OS X 10.9 Mavericks, but we expect Apple to address it in iOS 6 and Mountain Lion updates as well. follow link
Toggle Dock Magnification Temporarily
Sometimes it may be handy to enable or disable Dock magnification quickly. You can toggle Dock magnification from your normal settings easily, and temporarily, by pressing Control-Shift as you mouse over the Dock.
Visit plucky tree
Text Display Bug Can Render Apps Unusable