title: CSRF state token does not match one provided FB PHP SDK 3.1.1 Oauth 2.0
body: <p>My server logs show a "CSRF state token does not match one provided" error which seems to happen for almost every user. However, the users are created and/or authenticated and I am able to retrieve the user info. I am using a Linux server with Apache. I am also using the latest Facebook PHP SDK v.3.1.1 Can anyone tell me why this is happening and how to fix it?</p>