Why did I get a page that says "The page you're looking for was not found"?

If your community toolbar is currently active, and you got to a page with the message "The page you're looking for wasn't found" next to the logo and name of your toolbar publisher, it means the following: Your community toolbar detected that the page you were navigating to was not found and offered you a helpful Search page instead of the generic page usually displayed, called a 404 (http://en.wikipedia.org/wiki/404_error) or DNS error page.Your search term automatically appears, so you can just click Search to try again. If you'd rather, you can type in a different search. To disable this feature:
1. Open the toolbar's main menu (by clicking on the arrow immediately to the right of the toolbar's logo).
2. Select Toolbar Options and then click the Additional Settings tab.
3. Clear the check box next to: Fix "page not found" errors.
Please note that this feature may not be available for all community toolbars.