[mod_python] PyThreadState_Swap(NULL)

> For a start, which version of mod_python are you using? There were  
> some
> important changes in mod_python 3.2.8 to allow third party modules for
> Python to work properly where those third party modules used the  
> simple
> GIL API for thread management.

Whoops, that should be mod_python 3.2.10. Not 3.2.8.

Graham