Index: /applications/editors/josm/plugins/dumbutils/src/dumbutils/DumbUtilsPlugin.java
===================================================================
--- /applications/editors/josm/plugins/dumbutils/src/dumbutils/DumbUtilsPlugin.java	(revision 25874)
+++ /applications/editors/josm/plugins/dumbutils/src/dumbutils/DumbUtilsPlugin.java	(revision 25875)
@@ -2,4 +2,5 @@
 
 import javax.swing.JMenuItem;
+import javax.swing.JOptionPane;
 
 import org.openstreetmap.josm.Main;
@@ -24,4 +25,11 @@
         pasteRelations = MainMenu.add(Main.main.menu.toolsMenu, new PasteRelationsAction());
         alignWayNodes = MainMenu.add(Main.main.menu.toolsMenu, new AlignWayNodesAction());
+
+        if( Main.pref.getBoolean("dumbutils.up2warning", true) ) {
+            JOptionPane.showMessageDialog(Main.parent,
+                    "DumbUtils plugin functionality was moved to UtilsPlugin2.\nThis plugin is no longer supported.",
+                    "DumbUtils Plugin", JOptionPane.WARNING_MESSAGE);
+            Main.pref.put("dumbutils.up2warning", false);
+        }
     }