Hi. I´ve tried many solutions suggested by many other users about this problem but it still doesn't work. Everytimes I click a link it opened a new tab and this is very very annoying. Well I did reset the firefox and it worked for a while but right after that it changed back to opening new tabs. Recently I installed a few add-ons like rikachan and spanish dictionary but I also had them before the opening issue appeared. Thank you.