1a2
> import copy
2a4
> import threading
93a96,105
>     def test_nested_dicts_in_threaded_env(self):
>         # segfaults on python2.5.5/FreeBSD 8.0-RELEASE-p2 
>         def threadloop():
>             x = {}
>             for i in range(16):
>                 x = {i:copy.copy(x)}
>             cPickle.dumps(x, 2)
>         t = threading.Thread(target=threadloop)
>         t.start()
>