OS - Windows 7 Browser - Firefox v26.0
For the past few days I have been unable to log into physics.stackexchange.com using OpenID. The error I get is below. Strangely, I can log in by browsing to the root site stackexchange.com and using OpenID. Then I can go to physics.stackexchange.com and get logged in automatically because I was already logged into the root site.
Unable to log in with your OpenID provider:
The openid.return_to parameter (https://physics.stackexchange.com/users/authenticate/?s=c15344d4-17e8-49a4-a903-a295ec4a5128&dnoa.userSuppliedIdentifier=https%3A%2F%2Fopenid.stackexchange.com%2Fuser%2F6605b47a-8e5f-40af-8d04-e838c8675845) does not match the actual URL (https://physics.stackexchange.com/users/authenticate/?s=c15344d4-17e8-49a4-a903-a295ec4a5128&dnoa.userSuppliedIdentifier=https%3A%2F%2Fopenid.stackexchange.com%2Fuser%2F6605b47a-8e5f-40af-8d04-e838c8675845&openid.claimed_id=https%3A%2F%2Fopenid.stackexchange.com%2Fuser%2F6605b47a-8e5f-40af-8d04-e838c8675845&openid.identity=https%3A%2F%2Fopenid.stackexchange.com%2Fuser%2F6605b47a-8e5f-40af-8d04-e838c8675845&openid.sig=C1VsVB5URdaZprZo0tRqzDwgmFSwk8kVDxM7mAW8lEw%3D&openid.signed=claimed_id%2Cidentity%2Cassoc_handle%2Cop_endpoint%2Creturn_to%2Cresponse_nonce%2Cns.alias3%2Calias3.mode%2Calias3.type.alias1%2Calias3.value.alias1%2Calias3.type.alias2%2Calias3.value.alias2&openid.assoc_handle=1Ltb%21IAAAALcYO9mOn_QMDQzJxGqxsg6Af5QghCn_8YIfu4gxKkOZQQAAAAGFmCfvbxvG3B3afcDveMh7dJMqemvMnVxTW1EOwFaj1sT3wDW7Pi3jk0LZzSM3rNRvArAyenOrXkCm8fgPNk76&openid.op_endpoint=https%3A%2F%2Fopenid.stackexchange.com%2Fopenid%2Fprovider&openid.return_to=http%3A%2F%2Fphysics.stackexchange.com%2Fusers%2Fauthenticate%2F%3Fs%3Dc15344d4-17e8-49a4-a903-a295ec4a5128%26dnoa.userSuppliedIdentifier%3Dhttps%253A%252F%252Fopenid.stackexchange.com%252Fuser%252F6605b47a-8e5f-40af-8d04-e838c8675845&openid.response_nonce=2014-01-08T19%3A15%3A35ZnevwToP9&openid.mode=id_res&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.alias3=http%3A%2F%2Fopenid.net%2Fsrv%2Fax%2F1.0&openid.alias3.mode=fetch_response&openid.alias3.type.alias1=http%3A%2F%2Faxschema.org%2Fcontact%2Femail&openid.alias3.value.alias1=gilg%40stanford.edu&openid.alias3.type.alias2=http%3A%2F%2Faxschema.org%2FnamePerson&openid.alias3.value.alias2=Isopycnal%20Oscillation) the request was made with.