diff --git a/Hash_map/benchmark/Hash_map/hm.cpp b/Hash_map/benchmark/Hash_map/hm.cpp
index 8a07d7dbdcb..d2d606c4498 100644
--- a/Hash_map/benchmark/Hash_map/hm.cpp
+++ b/Hash_map/benchmark/Hash_map/hm.cpp
@@ -47,25 +47,27 @@ run(const G& g)
   boost::rand48 random;
   boost::random_number_generator<boost::rand48> rng(random);
   std::random_shuffle(V.begin(), V.end(), rng);
-  for(int i=0; i < 10; i++){
-    std::cerr << get(vpm,V[i]) << std::endl;
-  }
+  
   Timer t;
+#if 0
   t.start();
   Map vm;
   BOOST_FOREACH(vertex_descriptor vd, V){
     vm[vd] = get(vpm,vd);
   }
   t.stop();  std::cerr << "Insertion:  " << t.time() << " sec.     " << std::endl;
+#endif
 
   Vector_3 v(0,0,0);
+  std::size_t st=0;
 
+#if 0
   std::cerr << "BOOST_FOREACH std::vector<vertex_descriptor)\n";
   t.reset(); t.start();
   for(int i=0; i<100; i++){
   BOOST_FOREACH(vertex_descriptor vd, V2){ 
 #ifdef NOHASH    
-    v = v + (get(vpm,vd) - CGAL::ORIGIN);
+    st += std::size_t(vd);
 #else 
     typename Map::iterator it = vm.find(vd);
     v = v + ((*it).second - CGAL::ORIGIN);
@@ -74,14 +76,19 @@ run(const G& g)
   }
 
   t.stop();  std::cerr << "  " <<t.time() << " sec.     " << std::endl;
+#endif 
+
 
   std::cerr << "BOOST_FOREACH boost::iterator_range r = vertices(g))\n";
+
   t.reset(); t.start();
-  for(int i=0; i<100; i++){
   boost::iterator_range<typename boost::graph_traits<G>::vertex_iterator> r = vertices(g);
+  for(int i=0; i<100; i++){
+
   BOOST_FOREACH(vertex_descriptor vd, r) {
 #ifdef NOHASH    
-    v = v + (get(vpm,vd) - CGAL::ORIGIN);
+    st += std::size_t(vd);
+    // v = v + (get(vpm,vd) - CGAL::ORIGIN);
 #else
     typename Map::iterator it = vm.find(vd);
     v = v + ((*it).second - CGAL::ORIGIN);
@@ -93,11 +100,12 @@ run(const G& g)
 
    std::cerr << "BOOST_FOREACH CGAL::Iterator_range r = vertices(g))\n";
   t.reset(); t.start();
-  for(int i=0; i<100; i++){
   CGAL::Iterator_range<typename boost::graph_traits<G>::vertex_iterator> ir = vertices(g);
+  for(int i=0; i<100; i++){
   BOOST_FOREACH(vertex_descriptor vd, ir) {
-#ifdef NOHASH    
-    v = v + (get(vpm,vd) - CGAL::ORIGIN);
+#ifdef NOHASH
+    st += std::size_t(vd);
+    //v = v + (get(vpm,vd) - CGAL::ORIGIN);
 #else
     typename Map::iterator it = vm.find(vd);
     v = v + ((*it).second - CGAL::ORIGIN);
@@ -110,8 +118,9 @@ run(const G& g)
   t.reset(); t.start();
   for(int i=0; i<100; i++){
   BOOST_FOREACH(vertex_descriptor vd, vertices(g)) {
-#ifdef NOHASH    
-    v = v + (get(vpm,vd) - CGAL::ORIGIN);
+#ifdef NOHASH
+    st += std::size_t(vd);
+    //v = v + (get(vpm,vd) - CGAL::ORIGIN);
 #else
     typename Map::iterator it = vm.find(vd);
     v = v + ((*it).second - CGAL::ORIGIN);
@@ -120,6 +129,7 @@ run(const G& g)
   }
   t.stop();  std::cerr << "  " <<t.time() << " sec.     " << std::endl;
    
+#if 0
   std::cerr << "boost::tie(vb,ve) = vertices(g);\n";
   t.reset(); t.start();
     for(int i=0; i<100; i++){
@@ -128,7 +138,8 @@ run(const G& g)
   for(; vb != ve; ++vb) {
     vertex_descriptor vd = *vb;
 #ifdef NOHASH    
-    v = v + (get(vpm,vd) - CGAL::ORIGIN);
+    st += std::size_t(vd);
+    //v = v + (get(vpm,vd) - CGAL::ORIGIN);
 #else
     typename Map::iterator it = vm.find(vd);
     v = v + ((*it).second - CGAL::ORIGIN);
@@ -137,7 +148,9 @@ run(const G& g)
     }
   t.stop();  std::cerr << "  " <<t.time() << " sec.     " << std::endl;
 
-  std::cerr << "v = " << v << std::endl;
+#endif
+
+  std::cerr << "v = " << v << "  " << st << std::endl;
   
 }
 
@@ -162,12 +175,15 @@ int main(int , char* argv[])
     std::cerr << num_vertices(m) << " items\n";
     std::cerr << "\nSurface_mesh  std::map"<< std::endl;
     run<Mesh,SM>(m);
+#if 0
     std::cerr << "\nSurface_mesh  std::unordered_map"<< std::endl;
     run<Mesh,SUM>(m);
     std::cerr << "\nSurface_mesh  boost::unordered_map"<< std::endl;
     run<Mesh,BUM>(m);
+#endif
   }
-#if 1
+
+#if 0
   {
     typedef CGAL::Polyhedron_3<Kernel>      Mesh;
     typedef boost::graph_traits<Mesh>::vertex_descriptor vertex_descriptor;
diff --git a/Stream_support/include/CGAL/IO/io.h b/Stream_support/include/CGAL/IO/io.h
index d416f268630..3e16c8d18b6 100644
--- a/Stream_support/include/CGAL/IO/io.h
+++ b/Stream_support/include/CGAL/IO/io.h
@@ -140,7 +140,6 @@ public:
       }
     }while(true);
 
-    std::cerr << "|" << buffer.c_str() << "|" << std::endl;
     if(sscanf(buffer.c_str(), "%lf", &t) != 1) {
       // if a 'buffer' does not contain a double, set the fail bit.
       is.setstate(std::ios_base::failbit);