Hi, In Silverlight API 2.1 version, when I use graphics layer's clearGraphic method, it can't clear clusted graphics of this layer on the map. It works ok on 1.2 version.
Thanks for reporting this issue. We are currently working on it and the fix will be avavilable soon. In the meantime you can set your layer clusterer to NULL after clearing the Graphic objects on your map, then re-setting it back to your previous clustering definition.
