Index: C:/Documents and Settings/Teresa/workspace/jyhton/src/org/python/modules/thread.java
===================================================================
--- C:/Documents and Settings/Teresa/workspace/jyhton/src/org/python/modules/thread.java	(revision 3128)
+++ C:/Documents and Settings/Teresa/workspace/jyhton/src/org/python/modules/thread.java	(working copy)
@@ -40,10 +40,15 @@
     public static PyObject error = new PyString("thread.error");
 
     public static void start_new_thread(PyObject func, PyTuple args) {
-        Thread pt = new FunctionThread(func, args.getArray());
-        pt.start();
-    }
-
+		Thread pt = new FunctionThread(func, args.getArray());
+		PyObject currentThread = func.__findattr__("im_self");
+		if (currentThread != null) {
+			PyObject isDaemon = currentThread.__getattr__("isDaemon");
+			boolean d = isDaemon.__call__().__nonzero__();
+			pt.setDaemon(d);
+		}
+		pt.start();
+	}
     public static PyLock allocate_lock() {
         return new PyLock();
     }
Index: C:/Documents and Settings/Teresa/workspace/jyhton/src/org/python/util/InteractiveInterpreter.java
===================================================================
--- C:/Documents and Settings/Teresa/workspace/jyhton/src/org/python/util/InteractiveInterpreter.java	(revision 3128)
+++ C:/Documents and Settings/Teresa/workspace/jyhton/src/org/python/util/InteractiveInterpreter.java	(working copy)
@@ -6,13 +6,16 @@
 
 public class InteractiveInterpreter extends PythonInterpreter {
     public InteractiveInterpreter() {
-        super();
-        cflags = new CompilerFlags();
+        this(null, null);
     }
     public InteractiveInterpreter(PyObject locals) {
-        super(locals);
-        cflags = new CompilerFlags();
+        this(locals, null);
+
     }
+        public InteractiveInterpreter(PyObject locals, PySystemState systemState) {
+            super(locals, systemState);
+            cflags = new CompilerFlags();
+        }
 
     /**
      * Compile and run some source in the interpreter.