Greasemonkey also seems to cause this problem. I have Adblock Plus, Greasemonkey and Ubuntu Firefox Pack addons installed. They only way to make it work was to disable both Adblock Plus and Greasemonkey (and restart Firefox).
-- Firefox (on 8.10) crashes on important java applet (Bank-iD) https://bugs.launchpad.net/bugs/293270 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