diff -Naur opennebula-3.8.1.orig/include/ObjectXML.h opennebula-3.8.1/include/ObjectXML.h
--- opennebula-3.8.1.orig/include/ObjectXML.h	2012-10-26 11:30:33.000000000 -0400
+++ opennebula-3.8.1/include/ObjectXML.h	2012-11-29 22:27:33.000000000 -0500
@@ -97,6 +97,30 @@
     /**
      *  Gets and sets a xpath attribute, if the attribute is not found a default
      *  is used
+     *    @param value to set 
+     *    @param xpath_expr of the xml element
+     *    @param def default value if the element is not found
+     *
+     *    @return -1 if default was set
+     */
+    int xpath(long long& value, const char * xpath_expr,
+              const long long& def);
+
+    /**
+     *  Gets and sets a xpath attribute, if the attribute is not found a default
+     *  is used
+     *    @param value to set 
+     *    @param xpath_expr of the xml element
+     *    @param def default value if the element is not found
+     *
+     *    @return -1 if default was set
+     */
+    int xpath(unsigned long long& value, const char * xpath_expr,
+              const unsigned long long& def);
+
+    /**
+     *  Gets and sets a xpath attribute, if the attribute is not found a default
+     *  is used
      *    @param value to set
      *    @param xpath_expr of the xml element
      *    @param def default value if the element is not found
diff -Naur opennebula-3.8.1.orig/include/VirtualMachine.h opennebula-3.8.1/include/VirtualMachine.h
--- opennebula-3.8.1.orig/include/VirtualMachine.h	2012-10-26 11:30:33.000000000 -0400
+++ opennebula-3.8.1/include/VirtualMachine.h	2012-11-29 22:37:50.000000000 -0500
@@ -173,13 +173,13 @@
      *   @param _memory Kilobytes used by the VM (total)
      *   @param _cpu used by the VM (rate)
      *   @param _net_tx transmitted bytes (total)
-     *   @param _net_tx received bytes (total)
+     *   @param _net_rx received bytes (total)
      */
     void update_info(
         const int _memory,
         const int _cpu,
-        const int _net_tx,
-        const int _net_rx)
+        const long long _net_tx,
+        const long long _net_rx)
     {
         if (_memory != -1)
         {
@@ -950,12 +950,12 @@
     /**
      *  Network usage, transmitted bytes
      */
-    int         net_tx;
+    long long   net_tx;
 
     /**
      *  Network usage, received bytes
      */
-    int         net_rx;
+    long long   net_rx;
 
     /**
      *  History record, for the current host
diff -Naur opennebula-3.8.1.orig/src/vmm/VirtualMachineManagerDriver.cc opennebula-3.8.1/src/vmm/VirtualMachineManagerDriver.cc
--- opennebula-3.8.1.orig/src/vmm/VirtualMachineManagerDriver.cc	2012-10-26 11:30:33.000000000 -0400
+++ opennebula-3.8.1/src/vmm/VirtualMachineManagerDriver.cc	2012-11-29 22:06:31.000000000 -0500
@@ -386,8 +386,8 @@
 
             int             cpu    = -1;
             int             memory = -1;
-            int             net_tx = -1;
-            int             net_rx = -1;
+            long long       net_tx = -1;
+            long long       net_rx = -1;
             char            state  = '-';
 
             string monitor_str = is.str();
diff -Naur opennebula-3.8.1.orig/src/xml/ObjectXML.cc opennebula-3.8.1/src/xml/ObjectXML.cc
--- opennebula-3.8.1.orig/src/xml/ObjectXML.cc	2012-10-26 11:30:33.000000000 -0400
+++ opennebula-3.8.1/src/xml/ObjectXML.cc	2012-11-29 22:27:47.000000000 -0500
@@ -222,6 +222,74 @@
 /* -------------------------------------------------------------------------- */
 /* -------------------------------------------------------------------------- */
 
+int ObjectXML::xpath(long long& value, const char * xpath_expr,
+                     const long long& def)
+{
+    vector<string> values;
+    int rc = 0;
+
+    values = (*this)[xpath_expr];
+
+    if (values.empty() == true)
+    {
+        value = def;
+        rc = -1;
+    }
+    else
+    {
+        istringstream iss;
+
+        iss.str(values[0]);
+
+        iss >> dec >> value;
+
+        if (iss.fail() == true)
+        {
+            value = def;
+            rc    = -1;
+        }
+    }
+
+    return rc;
+}
+
+/* -------------------------------------------------------------------------- */
+/* -------------------------------------------------------------------------- */
+
+int ObjectXML::xpath(unsigned long long& value, const char * xpath_expr,
+                     const unsigned long long& def)
+{
+    vector<string> values;
+    int rc = 0;
+
+    values = (*this)[xpath_expr];
+
+    if (values.empty() == true)
+    {
+        value = def;
+        rc = -1;
+    }
+    else
+    {
+        istringstream iss;
+
+        iss.str(values[0]);
+
+        iss >> dec >> value;
+
+        if (iss.fail() == true)
+        {
+            value = def;
+            rc    = -1;
+        }
+    }
+
+    return rc;
+}
+
+/* -------------------------------------------------------------------------- */
+/* -------------------------------------------------------------------------- */
+
 int ObjectXML::xpath(time_t& value, const char * xpath_expr, const time_t& def)
 {
     int int_val;