Firefox 4 uses a combined Stop/Reload/Go button that is positioned at the right end of the location bar.<br /> During the page load process it shows as a Stop button and after the loading has finished the button is changed to a Reload button.<br /> If you type in the location bar then that button becomes a Go button.<br /> You can middle-click that Reload button to duplicate the current tab to a new tab. ---- To move the Stop and Reload buttons to their position to the left of the location bar you can use these steps: * Open the "View > Toolbars > Customize" window to move the Stop and Reload button out of the location bar. * Drag the Reload and Stop buttons to their previous position to the left of the location bar. * Set the order to "Reload - Stop" to get a combined "Reload/Stop" button. * Set the order to "Stop - Reload" or separate them otherwise to get two distinct buttons.