Ironically, this site (financialcryptography.com) has an unknown CA.
Posted by pgl at November 8, 2010 04:20 AMIronically, it's very well known. Just not by you!
You can download the root by going to this URL:
http://www.cacert.org/index.php?id=3
Enjoy!
Posted by CAcert's root at November 8, 2010 06:57 AM