.htaccess pcfg_openfile on cPanel With suPHP

On cPanel running suPHP the entire contents of the users public_html folder need to be 755 so:

[/home/$user/public_html]# chmod -R 755 *

Now, you may have to do this explicitly on the .htaccess file(s) as well

[/home/$user/public_html]# chmod 755 .htaccess

If you are still having issues you can:

[/etc/httpd/logs]# tail -f error_log

...to see what errors you are getting