--- classes/include/CflowdInterfaceMatrix.hh.bak	Mon Sep 21 20:54:27 1998
+++ classes/include/CflowdInterfaceMatrix.hh	Fri Jun 15 16:54:18 2007
@@ -50,6 +50,7 @@
 
 #include <map>
 #include <iostream.h>
+using namespace std;
 
 #include "CflowdInterfaceMatrixKey.hh"
 #include "CflowdInterfaceMatrixTrafficCounter.hh"