Yep. The certificate is signed by cacert.org and their root doesn't exist isn't in your os/browser combination. I don't really want to turn this into a thread a

Yep. The certificate is signed by cacert.org and their root doesn't exist isn't in your os/browser combination. I don't really want to turn this into a thread about my SSL setup so I will just say that if you want an explanation, you should read: https://secure.grepular.com/Why_Does_this_Website_Generate_SSL_Warnings https://secure.grepular.com/Why_Does_this_Website_Generate_S... Yes, I realise the irony about the explanation being behind the same certificate.