Making backspace work as “back” in Firefox 2.0

In Firefox 1.5, when you hit “back” and the focus is not in a text field, the effect is the same as that of clicking on the “Back” button or typing Alt + left arrow. In Firefox 2.0, this does not happen. If you want it to work as it did in FF1.5, do this:

• in the browser address bar, type “about:config” and hit Enter
• in the screen that will show up, type “backspace” in the “Filter:” box
• you should see a single configuration option left, “browser.backspace_action”, with value 1
• double-click on it and change the value to 0 (zero)

That’s it. No need to restart the browser or save anything, and the backspace key works as desired again.