While running test.regrtest, test_mailbox failed with the error:

test test_mailbox failed -- Traceback (most recent call last):
  File "/home/wolf/py3k/Lib/test/test_mailbox.py", line 116, in 
test_discard
    self.assertEqual(len(self._box), 1)
AssertionError: 2 != 1

I ran the test again several times and got intermittent failures in 
several different methods. Attached there's a file with the errors I 
got. 

During the first tests I was running test_mailbox after 
test_zipimport, but then I was able to reproduce the failures running 
test_mailbox alone.

I'm using Python 3.2a0 on Ubuntu 8.04.