Using the default ispcp apache configs for fcgid with the FCGIWrapper.
Code:
Include /etc/apache2/mods-available/fcgid_ispcp.conf
        <Directory /var/www/virtual/example.com/htdocs>
            FCGIWrapper /var/www/fcgi/example.com/php5-fcgi-starter .php
            Options +ExecCGI
        </Directory>
        <Directory "/var/www/fcgi/example.com">
            AllowOverride None
            Options +ExecCGI MultiViews -Indexes
            Order allow,deny
            Allow from all
        </Directory>
 
This works fine for the most part until a htaccess file is added to the path with mod_auth directives.
default-error.log
Code:
child pid 29119 exit signal Segmentation fault (11)
 
It would appear that mod_auth is changing the effective user or something. I imagined that 
FcgidAuthenticatorAuthoritative might help but this I believe was deprecated at Apache 2.2 and returns errors.
Have experimented with using mod_action instead of FCGIWrapper with no luck....
Any ideas?
-Ben