[mod_python] Apache segfault when using PythonImport

Apache is segfaulting when I use the PythonImport directive.

I have seen it under two slightly different conditions:

A) Apache 1.3.23 (from Red Hat Linux 7.3 errata), Python 2.2.2 without
threads, and mod_python 2.7.8

In this case the backtrace shows that the segfault occurs in ap_palloc. 
The stack looks like ap_palloc -> ap_pstrdup -> ap_table_add ->
directive_PythonImport.

B) Apache 1.3.23 (as above) or Apache 1.3.27, Python 2.2.2 with threads,
and mod_python 2.7.8

Different backtrace.  Dies in pthread_mutex_lock, called from
PyEval_AcquireLock.

Has anyone had sucess with using PythonImport with python 2.2 on apache
1.3?

Thanks.
Peter