Same as title but with sweet feature :
How could I configure firefox to go to previous page like IE does when I hit Backspace?
Right-now, I'm using Firefox on Linux (Fedora13) :
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:22.214.171.124) Gecko/20101027 Fedora/3.6.12-1.fc13 Firefox/3.6.12
But on my laptop (Windows-7 home edition) I remembered that it doesn't work too. I'll retry it later...