Recently installed cyanogenmod and installed few additional application however, starting few days ago, lot of popup with advertisement showing up on main screen which is testing my nerve. These are not in-app popup shows up usually in the app screen. IT shows up on main screen. I am bit not sure on how to get rid of it. Once popup it will disappear if I hit any button therefore it is hard to say where the source is from. There is nothing in the status bar. Anyone has suggestion?