Parser running twice?

I noticed that there are two temp files generated by apreq when I am
uploading data.  When the files are really big, like gigabytes, that
becomes a problem.  Does it seem right that there should be two temp
files?  The seem to be identical - at least when the request is
completed and they are not yet deleted, I can see that they are the
same size.  It looks like the parser must be running twice for some
reason.  The procedure is fairly simple, but maybe I got it wrong.  I
am doing these steps:

1) apreq_handle_apache2 - init apreq
2) ap_setup_client_block
3) ap_should_client_block
4) apreq_body - trigger the parse
5) apreq_param - mess with the input

Is there something wrong here?

Brian McQueen