You don't have permission to access / on this server.
[Sun Jan 23 15:28:12 2011] [crit] [client 18.104.22.168] (13)Permission denied: /www/vhosts/domain.com/httpdocs/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable
So basically your htaccess and index.php should be 755 to work, and so should your main httpdocs directory or your equivalent eg. /var/www/html
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