I can confirm I'm currently consistently getting the same error when attempting to post a comment on https://bugs.launchpad.net/ubuntu-font-family/+bug/629727/ - the same in IE, FireFox, and Chrome.
I can confirm I'm currently consistently getting the same error when attempting to post a comment on https:/ /bugs.launchpad .net/ubuntu- font-family/ +bug/629727/ - the same in IE, FireFox, and Chrome.