There is an option for Firefox to open links in new tabs instead of opening the link in the current tab. There is also an option for Firefox to switch to the new tab you just opened when you click on a link. I have the first box checked - to open links in new tabs - but not the second option - to switch to the new tab right away. Firefox just started switching to the new tab yesterday. I've tried checking and unchecking the box for 'switch to new tab right away' but need some other help.