My Server Fault logon seems to be broken (SO, MSO and SU are all fine). When I try to logon using my 'MyOpenID' provider I get the following error on the Server Fault logon page:
Unable to log in with your OpenID provider:
The signature verification failed.
This is happening on two different machines connected to two different internet providers. I'm running Windows 7 Ultimate 64-bit and Firefox 3.5.3.
I've cleared all my cookies, cache etc but the error persists.
How strange, this has just magically started working again. Nothing was changed at this end.