Index: Include/py_curses.h
===================================================================
--- Include/py_curses.h	(revision 80097)
+++ Include/py_curses.h	(working copy)
@@ -74,8 +74,9 @@
 /* Type declarations */
 
 typedef struct {
-	PyObject_HEAD
-	WINDOW *win;
+        PyObject_HEAD
+        WINDOW *win;
+        int delwin_allowed;  /* Flag: we don't want to call delwin on stdscr */
 } PyCursesWindowObject;
 
 #define PyCursesWindow_Check(v)	 (Py_TYPE(v) == &PyCursesWindow_Type)
Index: Lib/threading.py
===================================================================
--- Lib/threading.py	(revision 80097)
+++ Lib/threading.py	(working copy)
@@ -484,7 +484,8 @@
         finally:
             # Avoid a refcycle if the thread is running a function with
             # an argument that has a member that points to the thread.
-            del self.__target, self.__args, self.__kwargs
+            pass
+            #del self.__target, self.__args, self.__kwargs
 
     def __bootstrap(self):
         # Wrapper around the real bootstrap code that ignores
Index: Modules/_cursesmodule.c
===================================================================
--- Modules/_cursesmodule.c	(revision 80097)
+++ Modules/_cursesmodule.c	(working copy)
@@ -348,13 +348,14 @@
 	wo = PyObject_NEW(PyCursesWindowObject, &PyCursesWindow_Type);
 	if (wo == NULL) return NULL;
 	wo->win = win;
+	wo->delwin_allowed = TRUE;
 	return (PyObject *)wo;
 }
 
 static void
 PyCursesWindow_Dealloc(PyCursesWindowObject *wo)
 {
-  if (wo->win != stdscr) delwin(wo->win);
+  if (wo->delwin_allowed) delwin(wo->win);
   PyObject_DEL(wo);
 }
 
@@ -1907,10 +1908,13 @@
 PyCurses_InitScr(PyObject *self)
 {
   WINDOW *win;
+  PyCursesWindowObject *rv;
 
   if (initialised == TRUE) {
     wrefresh(stdscr);
-    return (PyObject *)PyCursesWindow_New(stdscr);
+    rv = (PyCursesWindowObject *)PyCursesWindow_New(stdscr);
+    rv->delwin_allowed = FALSE;
+    return (PyObject *)rv;
   }
 
   win = initscr();
@@ -2002,7 +2006,9 @@
   SetDictInt("LINES", LINES);
   SetDictInt("COLS", COLS);
 
-  return (PyObject *)PyCursesWindow_New(win);
+  rv = (PyCursesWindowObject *)PyCursesWindow_New(win);
+  rv->delwin_allowed = FALSE;
+  return (PyObject *)rv;
 }
 
 static PyObject *