--- Lib/wave.py.orig	2011-01-12 10:21:02.000000000 -0500
+++ Lib/wave.py	2011-01-12 10:21:49.000000000 -0500
@@ -181,10 +181,11 @@
     def close(self):
         if self._i_opened_the_file:
             self._i_opened_the_file.close()
             self._i_opened_the_file = None
         self._file = None
+        self._data_chunk = None
 
     def tell(self):
         return self._soundpos
 
     def getnchannels(self):