I visited the page in this bug's description using Firefox 53.0 on Ubuntu 17.04 "Zesty Zapus" and did not receive any error.
** Changed in: firefox-3.5 (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/637916 Title: Firefox cannot verify applet signature To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox-3.5/+bug/637916/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs