It sounds like the navigation toolbar is hidden.

If you have the old style menus, select the View menu, then Toolbars and click on the "Navigation Toolbar" entry to select it.

If you have the orange Firefox button, click on it, then select the Options menu and click on the "Navigation Toolbar" entry.

I tried what you said and nothing happened. I see the go back, go ahead, refresh and home buttons but not the stop. I liked it the old way when they were all put together in their own action bar. Can this be done with the new update?

Firefox 4 uses a combined Stop/Reload/Go button that is positioned at the right end side of the location bar.
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.
If you type in the location bar then that button becomes a Go button.
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 Customize window via "View > Toolbars > Customize" or via "Firefox > Options > Toolbar Layout"
• 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.

Thx for the info really helped.

You're welcome