Index: /trunk/src/org/openstreetmap/josm/data/osm/AbstractPrimitive.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/AbstractPrimitive.java	(revision 4149)
+++ /trunk/src/org/openstreetmap/josm/data/osm/AbstractPrimitive.java	(revision 4150)
@@ -201,4 +201,5 @@
         this.id = generateUniqueId();
         this.version = 0;
+        this.user = null;
         this.changesetId = 0; // reset changeset id on a new object
         this.setIncomplete(false);