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Description of problem: mod_auth_pgsql was orphaned in Fedora 16, so it no longer exits. For those users of Fedora, we are left with unusable Apache installations since Apache needs mod_auth_pgsql to start for authorization to areas of the web server.
I am closing this since there is a another way to authenticate Apache using a SQL database. For those with the same issue: Make sure you install apr-util-pgsql.i686. Modify httpd.conf to remove the authorization directives for mod_auth_pgsql and, add the appropriate directives as found here: http://httpd.apache.org/docs/2.1/mod/mod_authn_dbd.html