j'ai pas l'habitude d'écrire des journaux, mais là, ça vaut le coup. En tentant d'accéder à LinuxFr en "https://":

Secure Connection Failed

linuxfr.org uses an invalid security certificate.

The certificate is not trusted because the issuer certificate is unknown.

(Error code: sec_error_unknown_issuer)

    * This could be a problem with the server's configuration, or it

could be someone trying to impersonate the server.

    * If you have connected to this server successfully in the past, the
error may be temporary, and (…)