Firefox will displays no tool bars or address windowk ony a search window.
When executed, Firefox displays only a search window in the top screen bar -- no tool bars, no address window, no menu bar. The default home page is displayed. I uninstalled Firefox, (leaving personal data preserved), downloaded and installed the current version. No change!
Wšykne wótegrona (1)
In Firefox 3.6 on Windows you can hide the menu bar via "View > Toolbars" or via the right click context menu on a toolbar. Press and hold the Alt key down to bring up the menu bar. Go to "View > Toolbars" or right-click the menu bar or press Alt+V T to select which toolbars to show or hide.
See also: Restore the Menu bar in Firefox Back and forward or other toolbar buttons are missing