In ESRI's online seminar demonstration on 9/23/10, XY coordinates were shown below the scalebar, but in flexViewer 2.1 does not show them. Should it be by default or some change must be made in the config file?
The coordinateWidget is not suppose to go in a widget container and that is likely your issue. Look at the config-all.xml for an example of where to put this widget in your config file.