> (httrack -q -%i -iC2 <http://book.cakephp.org/en> -O
> /home/goran/www/docs/htt/cakephp -n -%P -N0 -s2 -o
> -x -p7 -D -a -K0 -%H -c4 -%k -A25000 -F "Mozilla/4.5
> (compatible; HTTrack 3.0x; Windows 98)" -%F "<!--
> Mirrored from %s%s by HTTrack Website Copier/3.x
> [XR&CO'2006], %s -->" +*.png +*.gif +*.jpg +*.css
> +*.js -ad.doubleclick.net/* -%s -%u -f2 )

> 01:23:19	Error: 	"No data (connection closed)" (-4)
> after 2 retries at link book.cakephp.org/robots.txt

Some sites do not like HTT in the browser ID.
I always run using "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"