? gmap-cluster-issue-406618.patch
Index: clustermarker_marker.js
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/gmap/js/clustermarker_marker.js,v
retrieving revision 1.1
diff -u -p -r1.1 clustermarker_marker.js
--- clustermarker_marker.js	12 Feb 2009 23:45:23 -0000	1.1
+++ clustermarker_marker.js	26 Oct 2009 22:37:17 -0000
@@ -47,4 +47,8 @@ Drupal.gmap.addHandler('gmap', function 
   obj.bind('clearmarkers', function () {
     obj.clusterMarker.removeMarkers();
   });
+
+  obj.bind('markersready', function () {
+    obj.clusterMarker.refresh();
+  });
 });