Returning Backspace as previous page button in Firefox @ Linux

Are you sick of pressing the back button at Firefox in Linux ? well, me too. So if you want to go back to the previous page by just pressing Backspace, then you gotto do some digging ;-)

The feature was removed to fix a bug. The bug that was caused by fixing the previous bug, which is that the backspace does not behave like it should has been fixed too (Thank heavens!)

But then, until the bug fix propagates to a Firefox build available on Ubuntu, one has to resort to a little scratching to fix the matter. Here’s how you resurrect the backspace button in Firefox 2.0 (worked for 3.o.10 today):

Type “about:config” in the address bar of Firefox and press Enter.
`Filter` for ‘browser.backspace_action’ and change its value to 0 (zero)

Source