That did happened you repeatly or only in a punctual, it could be a problem of the website in that moment. Did you installed or upgraded anything in firefox, a complement, a flash application an ad blocker or a toolbar for the browser. Next time try to report the title of the bug in english.
** Changed in: firefox (Ubuntu) Status: New => Incomplete -- Non riesco a giocare nel sito http://farmerama.gioco.it/ https://bugs.launchpad.net/bugs/677618 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs