A couple of weeks back I tried to login to signon.com, my preferred OpenID provider. I use signon.com because it accepts Information Cards for authentication, so that's one less password to remember. However it didn't work; which was strange. I noticed that blogs I had used Information Cards on before told me they couldn't recognise my card either. It appears that someone listened to the problems with SSL and PPIDs I blogged about in February and this has broken the login. The change isn't a bad thing, it removes the dependence on the SSL chain so when you renew...