Getting error message when using FF to connect today.
This Connection is Untrusted
You have asked Firefox to connect securely to www.ozbargain.com.au, but we can't confirm that your connection is secure.
Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified.
What Should I Do?
If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.
This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate.
Get me out of here!
Then under the techinical details it has
"www.ozbargain.com.au uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported.
Error code: sec_error_unknown_issuer)"
Anybody else or just lucky me? Works fine in IE which is a bit sad
OzBargain uses a GeoTrust root cert and a RapidSSL intermediary cert, which should be fine on Firefox. Firefox and IE have different stores of root certs, so I'd try reinstalling firefox? It may just be the certificate store is corrupt or out-of-date?