I don't use FB, but you could try going through Application Manager and finding the app listed, make sure to force close it first, and clearing both "data", and "cache" on the app. If you have the official FB app that you downloaded from the market, go through the application manager list under "all", and find the FB app that comes with the S3, and disable that. You'll see it because it's the same FB icon, named SNS, force close that, clear data/cache if they have any values, then click the disable button.. Try that and see if it helps you..