diff -r 907a45df1295 -r 9e2eb4023f57 Lib/chunk.py
--- a/Lib/chunk.py	Thu Aug 30 01:19:48 2007 +0000
+++ b/Lib/chunk.py	Thu Aug 25 08:41:22 2011 +0200
@@ -163,5 +163,6 @@
         while self.size_read < self.chunksize:
             n = min(8192, self.chunksize - self.size_read)
             dummy = self.read(n)
+            self.size_read += len(dummy)
             if not dummy:
                 raise EOFError