Click on tools on the Mozilla tool bar at the top,. open Options,. open Privacy,. go to very bottom, open Settings,. check the Saved Password box and any other thing you want erased. That should do it...... If you can't find tools, right click and use customize, there you can find Tools option and many others you may want to place in the toolbar, drag it to top. Lock the toolbar so it will stay like you set it!!