This works:

<Location /svn>
    DAV svn
    SVNParentPath /home/svn/
    SVNPathAuthz off
</Location>

This causes apache to segfault:

<Location /svn>
    DAV svn
    SVNParentPath /home/svn/
    SVNPathAuthz off
    
    AuthType Basic
    AuthName "Django project subversion repository"
    Auth_PG_database djangoproject
    Auth_PG_user apache
    Auth_PG_pwd_table django_auth_pgsql_perms
    Auth_PG_uid_field username
    Auth_PG_pwd_field password_md5
    Auth_PG_pwd_whereclause " AND can_commit = 't' "
    Auth_PG_hash_type MD5
    
    <LimitExcept GET PROPFIND OPTIONS REPORT>
        require valid-user
    </LimitExcept>
</Location>

The exact error that subversion gives is:

[jacob@046] ~/django$ svn ci bar.txt 
Authentication realm: <http://code.djangoproject.com:80> Django project subversion repository
Password for 'jacob': 
subversion/libsvn_client/commit.c:765: (apr_err=175002)
svn: Commit failed (details follow):
subversion/libsvn_ra_dav/util.c:294: (apr_err=175002)
svn: MKACTIVITY of '/svn/django/!svn/act/943084d2-b5fb-0310-9b7c-c4ba25c9ff9d': Could not read status line: connection was closed by server. (http://code.djangoproject.com)
subversion/clients/cmdline/util.c:381: (apr_err=175002)

And in the apache error log I see:

[Tue Jul 12 10:41:32 2005] [notice] child pid 6869 exit signal Segmentation fault (11)