I have an interesting situation. In the last 2-3 days, when I open Facebook the page is zoomed out so I can barely read the text. This happens using Firefox. I did update to the latest 41.01 recently & I think it started after that. I did install a previous version but it's still the same. All other sites are normal. I also have Pale Moon & Commodo Ice Dragon browsers which are Firefox based & they are fine. Any ideas?