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I would guess that the problem is going to be windows 
specific?
I tested similar problem on both the debug and release build,
and I did try to get some comment on comp.lang.python
i.e.
http://mail.python.org/pipermail/python-list/2005-
April/278404.html

my comment on the debugging was:
> The crash happens while the main thread is in Py_Finalize.
> I traced the crash to _Py_ForgetReference(op) in object.c 
at line 1847,
> where I have op->_ob_prev == NULL.

I did not look at the python code long enough to follow it.
I will try to reproduce tonight and send out the stack - for 
whatever reason I'm not finding it any longer.