Index: lams_common/src/java/org/lamsfoundation/lams/web/controller/AbstractTimeLimitWebsocketServer.java
===================================================================
diff -u -r307d08b374afefb264a041667fcbeaee2b58e44c -rda23fca6d3598bdcf769e19475d65487fb3c15fb
--- lams_common/src/java/org/lamsfoundation/lams/web/controller/AbstractTimeLimitWebsocketServer.java	(.../AbstractTimeLimitWebsocketServer.java)	(revision 307d08b374afefb264a041667fcbeaee2b58e44c)
+++ lams_common/src/java/org/lamsfoundation/lams/web/controller/AbstractTimeLimitWebsocketServer.java	(.../AbstractTimeLimitWebsocketServer.java)	(revision da23fca6d3598bdcf769e19475d65487fb3c15fb)
@@ -76,6 +76,18 @@
 
 	public TimeCache() {
 	}
+
+	@Override
+	public String toString() {
+	    final StringBuilder sb = new StringBuilder("{");
+	    sb.append("relativeTimeLimit=").append(relativeTimeLimit);
+	    sb.append(", absoluteTimeLimit=").append(absoluteTimeLimit);
+	    sb.append(", absoluteTimeLimitFinish=").append(absoluteTimeLimitFinish);
+	    sb.append(", timeLimitLaunchedDate=").append(timeLimitLaunchedDate);
+	    sb.append(", timeLimitAdjustment=").append(timeLimitAdjustment);
+	    sb.append('}');
+	    return sb.toString();
+	}
     }
 
     /**
@@ -173,7 +185,7 @@
 	}
 
 	TimeCache timeCache = timeCaches.get(toolContentId);
-	// first time a learner entered the activity, so there is not cache yet
+	// first time a learner entered the activity, so there is no cache yet
 	if (timeCache == null) {
 	    timeCache = new TimeCache();
 	    timeCaches.put(toolContentId, timeCache);
@@ -210,6 +222,11 @@
 	    updateAllUsers = true;
 	}
 
+	if (updateAllUsers && log.isDebugEnabled()) {
+	    log.debug("Time limit settings changed for activity with tool content ID " + toolContentId + ": "
+		    + existingTimeSettings);
+	}
+
 	for (Session websocket : websockets) {
 	    Integer userId = (Integer) websocket.getUserProperties().get("userId");