Index: /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/OSMValidatorPlugin.java
===================================================================
--- /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/OSMValidatorPlugin.java	(revision 6556)
+++ /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/OSMValidatorPlugin.java	(revision 6557)
@@ -54,4 +54,5 @@
         CrossingWays.class,
         SimilarNamedWays.class,
+		NodesWithSameName.class,
         Coastlines.class,
         WronglyOrderedWays.class,
Index: /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/tests/NodesWithSameName.java
===================================================================
--- /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/tests/NodesWithSameName.java	(revision 6557)
+++ /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/tests/NodesWithSameName.java	(revision 6557)
@@ -0,0 +1,51 @@
+package org.openstreetmap.josm.plugins.validator.tests;
+
+import static org.openstreetmap.josm.tools.I18n.tr;
+
+import java.util.Map;
+import java.util.List;
+import java.util.HashMap;
+import java.util.ArrayList;
+
+import org.openstreetmap.josm.data.osm.Node;
+import org.openstreetmap.josm.plugins.validator.Severity;
+import org.openstreetmap.josm.plugins.validator.Test;
+import org.openstreetmap.josm.plugins.validator.TestError;
+
+public class NodesWithSameName extends Test {
+	private Map<String, List<Node>> namesToNodes;
+
+	public NodesWithSameName() {
+		super(tr("Nodes with same name"),
+			tr("Find nodes that have the same name " +
+				"(might be duplicates due to e.g. the OpenGeoDB import)"));
+	}
+
+	@Override public void startTest() {
+		namesToNodes = new HashMap<String, List<Node>>();
+	}
+
+	@Override public void visit(Node n) {
+		if (n.deleted || n.incomplete) return;
+
+		String name = n.get("name");
+		if (name == null) return;
+
+		List<Node> nodes = namesToNodes.get(name);
+		if (nodes == null)
+			namesToNodes.put(name, nodes = new ArrayList<Node>());
+
+		nodes.add(n);
+	}
+
+	@Override public void endTest() {
+		for (List<Node> nodes : namesToNodes.values()) {
+			if (nodes.size() > 1) {
+				errors.add(new TestError(this, Severity.WARNING,
+					tr("Nodes with same name"), nodes));
+			}
+		}
+
+		namesToNodes = null;
+	}
+}