Index: lams_learning/src/java/org/lamsfoundation/lams/learning/web/action/LearnerAction.java
===================================================================
diff -u -r6710ffa47b5b99cb033f76dc5df2cc729cd34ce0 -r509ff3210f0ba8d0418e81d99935bc1b2b12b4e9
--- lams_learning/src/java/org/lamsfoundation/lams/learning/web/action/LearnerAction.java	(.../LearnerAction.java)	(revision 6710ffa47b5b99cb033f76dc5df2cc729cd34ce0)
+++ lams_learning/src/java/org/lamsfoundation/lams/learning/web/action/LearnerAction.java	(.../LearnerAction.java)	(revision 509ff3210f0ba8d0418e81d99935bc1b2b12b4e9)
@@ -381,6 +381,8 @@
 	    LearnerAction.log.debug("Getting Flash progress data...");
 	}
 
+    
+
 	FlashMessage message = null;
 	try {
 
@@ -404,8 +406,13 @@
 	if (LearnerAction.log.isDebugEnabled()) {
 	    LearnerAction.log.debug("Sending learner progress data to flash:" + wddxPacket);
 	}
-	response.getWriter().print(wddxPacket);
+    // LDEV-2835
+	response.addHeader("Pragma", "no-cache");
+    response.addHeader("Cache-Control", "no-cache");
+    response.addDateHeader("Expires", System.currentTimeMillis() - (1000L * 60L * 60L * 24L * 365L));
 
+    response.getWriter().print(wddxPacket);
+
 	// don't need to return a action forward because it sent the wddx packet
 	// back already.
 	return null;
@@ -697,4 +704,4 @@
 	return redirectToURL(mapping, response, url);
     }
 
-}
\ No newline at end of file
+}