[mod_python] mod_python 3.1.3, PSP, apache 2.0.50, FreeBSD 5.2.1, LD_PRELOADs but still "Fatal python error"

On all .psp page loads, they appear to load fine, but in the apache
error log I get:

   Fatal Python error: PyThreadState_Delete: tstate is still current
   [notice] child pid 53450 exit signal Abort trap (6)


But in the apache access log, no entry is written.

/usr/local/sbin/envvars contains:
	LD_PRELOAD=/usr/lib/libc_r.so
	export LD_PRELOAD

Apache2 has NOT been compiled with the configure option
"--enable-threads".


Previous list threads of similar topic seem to stop at this point
without mention of resolution.  Any ideas?

Cheers,
Michael