I solved the problem. I saw that plugin swfdec was the problem. I uninstalled from the synaptic the mozilla-plugins swfdec and gnash. I uninstalled also the flash 9. Then I installed the flash 10 and all are OK (firefox, opera, epiphany). Thanks Andrew Seyes for your help.
-- jaunty: youtube crashes firefox https://bugs.launchpad.net/bugs/321586 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