I have been having the same problem with facebook the past couple of days while on 3G. It seems to work ok when on a wi-fi connection, but when on 3G it won't even load or update. I get connection error almost always when trying to connect to a notification. Other apps seem to work fine on 3G, but facebook does not. Suggestions? I've deleted and re installed the app as well as rebooting the phone. anyone have any other solutions???