diff -urN Python-2.5.2/Lib/gzip.py Python-2.5.2-gzip/Lib/gzip.py
--- Python-2.5.2/Lib/gzip.py	2006-08-02 06:12:36.000000000 +0200
+++ Python-2.5.2-gzip/Lib/gzip.py	2008-05-13 23:58:11.867744000 +0200
@@ -311,6 +311,18 @@
             raise IOError, "CRC check failed"
         elif isize != LOWU32(self.size):
             raise IOError, "Incorrect length of data produced"
+        # It might happen that gzip files are padded with zeroes.
+        # http://www.gzip.org/#faq8, but they can still contain multiple
+        # archives. To simulate the behaviour of any decent gzip, we will
+        # consume all zero bytes here and set file position to the first
+        # non-zero byte.
+        s = '\000'
+        while s and s == '\000':
+          s = self.fileobj.read(1)
+        if s:
+          # Haven't hit EOF... need to rewind one character back since it can
+          # be the begining of another archive.
+          self.fileobj.seek(-1, 1)
 
     def close(self):
         if self.mode == WRITE: