For bout two or three weeks( maybe longer) my facebook app will say my "login session has expired" and I have to keep logging back in. Sometime it will let me log in and sometime it won't. It will either say "there was a problem communicating with facebook" or "could not connect because a data service is not avaiable. Please try again later. If this continues , contact your service provider for support." I don't know what else to do, I have changed my password and deleted and reinstalled facebook, battery pulls etc. I really use facebook alot and this is driving me bananas! Please someone help me!