The above website uses an invalid certificate. Here's the warning firefox displays: ------------------------------------------------------------- www.theglobeandmail.com uses an invalid security certificate. The certificate is only valid for the following names: a248.e.akamai.net , *.akamaihd.net , *.akamaihd-staging.net (Error code: ssl_error_bad_cert_domain) So please disable the rule for it till the website owners fix this problem.