This has never been a problem. However about 2 weeks ago Firefox took control of itself. For example: You have site A open, you finish your work on site A and move on to a second site( we will call it B). Site B opens and then is quickly replaced by site A again. This time the bar at the browser screen top is pink and has a little machine like head at the end. You click on the little head fellow and it will say Site under remote control Dev. Tools. I have spoken to Dell two times, Dell has removed and re-installed Firefox one time and it is still the same. Dell says your people are working on your site and it will go way in time. Help Thank you Leonard Santamaria