I have created a basemap mxd using 10.1 desktop that incorporates a point feature class where I've set the symbology to null and just display a label attribute (landmark name). Now, when I publish the mxd as a map service (cached/tiled) to arcgis server 10.1, there are mysterious "dots" displayed. What is causing the dots to appear? I know it's a point feature class but they are not displayed in the mxd as I set the symbology to null. Thought that it would carry over to the map service when published. Is there something in the caching process that is causing this?