Kev, I would be interested to know the platform this was a problem on.

I haven't looked at the patch much (a little of tested.diff), primarily Martin's msg on python-dev.  I'm in favor of fixing this in concept.  I tend to agree with Thomas that the parameter name in ALL_CAPS seems a bit annoying.  I don't have a better suggestion and would rather see the patch applied with ALL_CAPS than not applied.

I would also like to remove the casts to PyCFunction for all the functions that are stored in the various static structures.  That will help ensure we don't copy bad examples and propagate the problem in the future.