I'll be on-line, playing a game or surfing the web and the next thing I know I don't have an internet connection. I click on "repair internet connection" and get the feedback, "unable to repair. I click on file and see that there is a check mark by 'work off-line' which I never checked. How can I prevent Firefox browser from automatically switching me over to the off-line mode whenever it feels like it. Very frustrating! Happens more than a few times a week but not every time Firefox is open.