User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0 (Beta/Release) Build ID: 20130512193848 Steps to reproduce: Visited website "https://bugzilla.mozilla.org/" Actual results: Got error "This Connection is Untrusted" Expected results: A way to override error message.

Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20130617 Firefox/24.0 WFM with latest Nightly build: bugzilla page opens successfully. Can you please try with a new profile (https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles) and in safe mode (https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode) and report back whether it is still reproducing?

The untrusted page seems to happen if I am browsing an https site and then change to a wifi that requires login and redirects page. but there is usually option that says "I under stand the risks" and then clicking that will redirect you to the login. That stopped showing up recently. But now says:Technical Details bugzilla.mozilla.org uses an invalid security certificate. The certificate is only valid for securelogin.arubanetworks.com (Error code: ssl_error_bad_cert_domain)

If the wifi thing puts the page in a frame, this is a duplicate of bug 756841. Also bug 800882 might be related.