Hi guys. This is what happened. I have an iphone 3gs jb 4.0.1 . yesterday i tried to install an app called ambiance from installous. apparently all versions were crashing but at my first attempt when i was asked to turn on the notifications, i said yes. From that moment until now i cant turn notifications OFF. It turn it off and once i exit settings.app it's turned ON again. What do you suggest i do?