Index: trunk/src/org/openstreetmap/josm/io/imagery/WMSGrabber.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/imagery/WMSGrabber.java	(revision 7658)
+++ trunk/src/org/openstreetmap/josm/io/imagery/WMSGrabber.java	(revision 7659)
@@ -259,4 +259,5 @@
 
         HttpURLConnection conn = Utils.openHttpConnection(url);
+        conn.setUseCaches(true);
         for (Entry<String, String> e : props.entrySet()) {
             conn.setRequestProperty(e.getKey(), e.getValue());