Fix various logging related issues.
diff --git a/src/main/java/net/onrc/onos/graph/GraphDBConnection.java b/src/main/java/net/onrc/onos/graph/GraphDBConnection.java
index 7938bb6..16869c5 100644
--- a/src/main/java/net/onrc/onos/graph/GraphDBConnection.java
+++ b/src/main/java/net/onrc/onos/graph/GraphDBConnection.java
@@ -167,7 +167,7 @@
 		try {
 			commit();
 		} catch (Exception e) {
-			log.error("{}", e.toString());
+			log.error("close() failed with exception", e);
 		}
 	}
 }
diff --git a/src/main/java/net/onrc/onos/graph/LocalTopologyEventListener.java b/src/main/java/net/onrc/onos/graph/LocalTopologyEventListener.java
index 40f5044..932d422 100644
--- a/src/main/java/net/onrc/onos/graph/LocalTopologyEventListener.java
+++ b/src/main/java/net/onrc/onos/graph/LocalTopologyEventListener.java
@@ -38,7 +38,7 @@
 		// TODO Auto-generated method stub
 		// Fire NetMapEvents (LinkRemoved, FlowEntryRemoved, HostRemoved, PortRemoved)
 		TitanEdge edge = (TitanEdge) e;
-		log.debug("TopologyEvents: Received edge removed event: {}",edge.toString());
+		log.debug("TopologyEvents: Received edge removed event: {}",edge);
 		String label = edge.getLabel();
 		if (label.equals("link")) {
 			Vertex v = edge.getVertex(Direction.IN);
@@ -76,7 +76,7 @@
 		// TODO Auto-generated method stub
 		// Generate NetMapEvents 
 		String type = (String) vertex.getProperty("type");
-		log.debug("TopologyEvents: Received vertex removed event: {}",vertex.toString());
+		log.debug("TopologyEvents: Received vertex removed event: {}",vertex);
 		if (type.equals("port")) {
 			// port is removed...lets fire reconcile here directly for now