I have tried for a while to figure this out, on my 9.1 Pro install, Firefox will not shut off that stupid autocomplete bar in the URLbar. What I have tried so far: 1. user.js --> browser.urlbar.autoFill = false Response: still going, but doing this in Mozilla works fine 2. Setting history.dat to read only Response: this works fine in XP, but not here. I also have tried chown to root, but whenever I start Firefox, it converts it back to myuser! Example of ls output::: Change by chown/chmod: -r--r--r-- root:root history.dat After restarting firefox -rw-r--r-- krisguy:users history.dat 3. Setting history days to 0 Response: still collects history info for one day. Has anyone had any experience with this and can point me in the right direction??