> E.g. go to <http://xoro.com/product/XOR000.prod>, click on 
> "Description" and you will get to <http://xoro>.
> com/product/daten_XOR000.prod . However, if you have a 
look 
> at the page source, you will find leading and trailing 
> spaces and, get a grip, "&#xD;" and "&#xA;" codes (CR and 
LF 
> characters_ in the links!

Argh!
href="&#xD;&#xA;                               
daten_XOR000.prod&#xD;&#xA;                            "

Obviously, there is some oddities in this site..

Currently, httrack can't download such links, I'll have to 
see how those weird characters can be filtered safely.