I select the photo I want to upload to facebook and then when I am transferred to the next "scene" where the selected photo is full screen with the option of adding a caption to it at the bottom of the iPhone screen + Upload or Cancel button, at that point, my image that is supposed to fill the screen is pitch black, it just doesn't show. I go ahead and push the upload button and facebook alerts me that i cannot upload the photo at the moment. It's very frustrating as I sometimes upload photos and videos without any problems yet often enough, I experience this blackout. Is this connected to an upload limit set by facebook for its iPhone 3GS app ? because flickr limits the upload for non-pro users.