companies that offer Search Box add-ons are working hard to improve their products. By default, Firefox checks for updates to itself and to each of these other components once a day and automatically installs any that are available. To configure this automatic behavior or to see a complete history of the updates installed, do any of the following on the Update tab: To prevent Firefox from automatically checking for updates, deselect the check boxes for the components for which Firefox should stop checking. You can deselect any of the following: Firefox: Updates to the Firefox product itself. I don't recommend disabling automatic checking for Firefox because then you won't be aware of critical Firefox updates that fix security flaws and other important bugs. Installed Extensions and Themes: Updates to any of the extensions or themes you have installed. Search Engines: Updates to any search engines you added to the Search Box in the upper-right corner of the main Firefox window, as I discuss in Chapter 4. To prevent automatic installation of available updates, select Ask Me What I Want to Do to have Firefox display the Update Wizard whenever an update is available. By default, Firefox automatically installs most available updates to Firefox itself as well as to your installed extensions, themes and Search Box engines. However, if a Firefox update is incompatible with at least one of your installed extensions or themes, Firefox warns you before installing the update. If you leave automatic updating enabled, you can turn off this warning by deselecting the Warn Me If This Will Disable Extensions or Themes check box. For more information about extension and theme compatibility, see the section on updating Firefox in Chapter 15, and check out Chapters 17 (on themes) and 20 (on extensions). To see a list of installed updates, click the Show Update History button to open the Update History window. See Chapter 15 for help with Firefox updates, Chapter 17 for help with theme updates, and Chapter 20 for help with extension updates. The Security tab TECHNICAL STUFF Firefox is built to keep you secure, which means you shouldn't touch the security options unless you're an advanced systems administrator. See Chapter 15 for things you can do to stay safe online.             Chapter 17: Finding Your Dream Theme My living room has a mahogany coffee table, a handsome grand piano finished in jet black, and a big gray box that whirs. Why are computers so drab? And what can anyone do about it? Although we developers don't have the time to build computers, we're doing what we can on the Firefox front. Firefox supports themes that completely change the look and feel of the browsing interface while leaving all your features intact. An elegant glass finish, a wooden feel, something bright and silly for your inner child, even a scene from a movie - whatever your tastes, you're sure to find something you like among the hundreds of available Firefox themes. Going to the Theme Park The Mozilla Foundation maintains an official list of the best themes at a site called Mozilla Update (http://themes.mozilla.org). You don't need to remember