fix your OpenID implementation
your implementation rejects the results from the OpenID server at http://certifi.ca - saying "Your OpenID request was cancelled" variously after going through the certificate confirmation or without taking me to the confirmation at all.
I tried logging in through my own web-server, and it seems the openid request does not send any "Accept" header:
It should at least send the following header:
How strange, openID and google worked great here. But not on the real site (http://www.commandlinefu.com/users/openid).