--- a/Implab/Diagnostics/TraceContext.cs	Mon Feb 09 00:28:13 2015 +0300
+++ b/Implab/Diagnostics/TraceContext.cs	Wed Feb 11 02:12:15 2015 +0300
@@ -42,14 +42,14 @@
 
         public void EnterLogicalOperation(LogicalOperation operation, bool takeOwnership) {
             //var prev = CurrentOperation;
+            //LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(takeOwnership ? TraceEventType.Attach : TraceEventType.Enter, String.Format("{0} -> {1}",prev.Name, operation.Name)));
             m_stack.Push(m_current);
             m_current = new OperationContext(operation, takeOwnership);
-            //LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(takeOwnership ? TraceEventType.Attach : TraceEventType.Enter, String.Format("{0} -> {1}",prev.Name, operation.Name)));
         }
 
         public void StartLogicalOperation(string name) {
+            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.OperationStarted, name));
             m_current.BeginLogicalOperation(name);
-            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.OperationStarted, String.Format("+{0}",CurrentOperation.Name)));
         }
 
         public void StartLogicalOperation() {
@@ -57,8 +57,8 @@
         }
 
         public void EndLogicalOperation() {
-            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.OperationCompleted, String.Format("-{0} : {1}ms",CurrentOperation.Name, CurrentOperation.Duration)));
-            m_current.EndLogicalOperation();
+            var op = m_current.EndLogicalOperation();
+            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.OperationCompleted, String.Format("-{0} : {1}ms",op.Name, op.Duration)));
         }
 
         public LogicalOperation DetachLogicalOperation() {