diff --git a/pykd/dbgext.cpp b/pykd/dbgext.cpp
index 1f9e2e3..a7422ad 100644
--- a/pykd/dbgext.cpp
+++ b/pykd/dbgext.cpp
@@ -59,6 +59,79 @@ WindbgGlobalSession     *WindbgGlobalSession::windbgGlobalSession = NULL;
 
 ////////////////////////////////////////////////////////////////////////////////
 
+class InterruptWatch
+{
+public:
+    InterruptWatch( PDEBUG_CLIENT4 client, python::object& global ) 
+    {
+        m_debugControl = client;
+
+        m_global = global;
+
+        m_stopEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
+
+        m_thread = 
+            CreateThread(
+                NULL,
+                0,
+                threadRoutine,
+                this,
+                0,
+                NULL );
+    }
+
+    ~InterruptWatch()
+    {
+        SetEvent( m_stopEvent );
+
+        WaitForSingleObject( m_thread, INFINITE );
+
+        CloseHandle( m_stopEvent );
+
+        CloseHandle( m_thread );
+    }
+
+private:
+
+
+    static int quit(void *) {
+        PyErr_SetString( PyExc_SystemExit, "" );
+        return -1;
+    }
+
+    DWORD workRoutine(){
+
+        while( WAIT_TIMEOUT == WaitForSingleObject( m_stopEvent, 250 ) )
+        {
+            HRESULT  hres =  m_debugControl->GetInterrupt();
+            if ( hres == S_OK )
+            {
+                PyGILState_STATE state = PyGILState_Ensure();
+                Py_AddPendingCall(&quit, NULL);
+                PyGILState_Release(state);
+
+                break;
+            }
+        }
+
+        return 0;
+    }
+
+    static DWORD WINAPI threadRoutine(LPVOID lpParameter) {
+        return  static_cast<InterruptWatch*>(lpParameter)->workRoutine();
+    }
+
+    HANDLE  m_thread;
+
+    HANDLE  m_stopEvent;
+
+    python::object m_global;
+
+    CComQIPtr<IDebugControl> m_debugControl;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
 BOOL WINAPI DllMain(
   __in  HINSTANCE /*hinstDLL*/,
   __in  DWORD fdwReason,
@@ -121,6 +194,8 @@ py( PDEBUG_CLIENT4 client, PCSTR args )
 
         python::object       global(main.attr("__dict__"));
 
+        InterruptWatch   interruptWatch( client, global );
+
         // настраиваем ввод/вывод ( чтобы в скрипте можно было писать print )
 
         python::object       sys = python::import("sys");
@@ -228,24 +303,28 @@ pycmd( PDEBUG_CLIENT4 client, PCSTR args )
     client->GetOutputMask( &mask );
     client->SetOutputMask( mask & ~DEBUG_OUTPUT_PROMPT ); // убрать эхо ввода
 
+    InterruptWatch   interruptWatch( client, WindbgGlobalSession::global() );
+
     try {
 
-        PyRun_String(
-            "__import__('code').InteractiveConsole(__import__('__main__').__dict__).interact()", 
-            Py_file_input,
-            WindbgGlobalSession::global().ptr(),
-            WindbgGlobalSession::global().ptr()
+        python::exec( 
+            "try:\n"
+            "  __import__('code').InteractiveConsole(__import__('__main__').__dict__).interact()\n"
+            "except SystemExit:\n"
+            "  print 'Ctrl+Break'\n",
+            WindbgGlobalSession::global(),
+            WindbgGlobalSession::global()
             );
-
-        // выход из интерпретатора происходит через исключение raise SystemExit(code)
-        // которое потом может помешать исполнению callback ов
-        PyErr_Clear();
     }
     catch(...)
     {
         eprintln( L"unexpected error" );
     }
 
+    // выход из интерпретатора происходит через исключение raise SystemExit(code)
+    // которое потом может помешать исполнению callback ов
+    PyErr_Clear();
+
     client->SetOutputMask( mask );
 
     WindbgGlobalSession::SavePyState();
diff --git a/snippets/nbl.py b/snippets/nbl.py
index 8e91d04..c3eb67e 100644
--- a/snippets/nbl.py
+++ b/snippets/nbl.py
@@ -154,8 +154,8 @@ class IpProtocol:
 
     def getNextLayerPacket( self, dataPos ):
         return { 
-		ICMP_PROTO : lambda x : "",
-		UDP_PROTO : lambda x : UdpPacket(x),
+                ICMP_PROTO : lambda x : "",
+                UDP_PROTO : lambda x : UdpPacket(x),
                 TCP_PROTO : lambda x : TcpPacket(x)
             }.get( self.typeVal, lambda x : "Unknown protocol" )(dataPos)
 
@@ -382,7 +382,7 @@ def getPacketFromNb( nb ):
 
     pcktBytes = list()
 
-    mdl = typedVar( "ndis", "_MDL", nb.CurrentMdl )
+    mdl = typedVar( "ndis!_MDL", nb.CurrentMdl )
     dataLength = nb.DataLength
     dataOffset = nb.CurrentMdlOffset
 
@@ -395,9 +395,9 @@ def getPacketFromNb( nb ):
 
         dataLength -= copyData
 
-        mdl = typedVar( "ndis", "_MDL", mdl.Next )
+        mdl = typedVar( "ndis!_MDL", mdl.Next )
 
-    return pcktBytes	
+    return pcktBytes
     
 
 
@@ -405,11 +405,11 @@ def getPacketsFromNbl( nblAddr ):
 
     pcktList = list()
 
-    nbl = typedVar( "ndis", "_NET_BUFFER_LIST", nblAddr )
+    nbl = typedVar( "ndis!_NET_BUFFER_LIST", nblAddr )
 
     while True:
     
-        nb = typedVar( "ndis", "_NET_BUFFER", nbl.FirstNetBuffer )
+        nb = typedVar( "ndis!_NET_BUFFER", nbl.FirstNetBuffer )
       
         while True:
 
@@ -418,12 +418,12 @@ def getPacketsFromNbl( nblAddr ):
             if nb.Next == 0:
                 break
 
-            nb = typedVar( "ndis", "_NET_BUFFER", nb.Next )
+            nb = typedVar( "ndis!_NET_BUFFER", nb.Next )
 
         if nbl.Next == 0:
             break
 
-        nbl = typedVar( "ndis", "_NET_BUFFER_LIST", nbl.Next )
+        nbl = typedVar( "ndis!_NET_BUFFER_LIST", nbl.Next )
 
     return pcktList 
 
@@ -437,7 +437,7 @@ def printNblStruct( nblAddr ):
                      
             dprintln( "NET_BUFFER_LIST %#x" % nblAddr )
 
-            nbl = typedVar( "ndis", "_NET_BUFFER_LIST", nblAddr )
+            nbl = typedVar( "ndis!_NET_BUFFER_LIST", nblAddr )
 
             nbAddr = nbl.FirstNetBuffer
 
@@ -445,7 +445,7 @@ def printNblStruct( nblAddr ):
 
                dprint( "\tNET_BUFFER %#x" % nbAddr )
                 
-               nb = typedVar( "ndis", "_NET_BUFFER", nbAddr )
+               nb = typedVar( "ndis!_NET_BUFFER", nbAddr )
 
                dprintln( "  data length = %d, data offset = %#x " % ( nb.DataLength, nb.DataOffset ) )
 
@@ -455,7 +455,7 @@ def printNblStruct( nblAddr ):
 
                    dprint( "\t\tMDL %#x" % mdlAddr )
                    
-                   mdl = typedVar( "ndis", "_MDL", mdlAddr )
+                   mdl = typedVar( "ndis!_MDL", mdlAddr )
 
                    dprintln( "  byte count = %d, byte offset = %#x, mapped addr = %#x" % ( mdl.ByteCount, mdl.ByteOffset, mdl.MappedSystemVa ) )