Index: lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/web/actions/LearningWebsocketServer.java
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/web/actions/Attic/LearningWebsocketServer.java,v
diff -u -r1.1.2.1 -r1.1.2.2
--- lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/web/actions/LearningWebsocketServer.java	22 Jan 2016 10:50:25 -0000	1.1.2.1
+++ lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/web/actions/LearningWebsocketServer.java	29 Jan 2016 09:13:10 -0000	1.1.2.2
@@ -99,13 +99,14 @@
 			    if (sessionWebsockets.isEmpty()) {
 				entryIterator.remove();
 				LearningWebsocketServer.rosters.remove(toolSessionId);
+				lastSendTimes.remove(toolSessionId);
 			    }
 			}
 		    }
 
 		    Thread.sleep(SendWorker.CHECK_INTERVAL);
 		} catch (InterruptedException e) {
-		    LearningWebsocketServer.log.warn("Stopping Chat worker thread");
+		    LearningWebsocketServer.log.warn("Interrupted Chat worker thread");
 		    stopFlag = true;
 		} catch (Exception e) {
 		    // error caught, but carry on