I got an e-mail suggestion to update my profile from Stack Overflow Careers. I went to log in and got this error message:
Unable to log in with your OpenID provider:
No OpenID endpoint found.
I can log in normally on Stack Overflow. I have never seen this error before, and I have not recently changed anything about my OpenID arrangements.
My OpenID URL is
http://switchb.org/kpreid/. Tried on Safari 6.0 (7536.25) and on Chrome 24.0.1297.0 dev.