> I guess httrack was too fast to download this website.
> Is there a way for me to download this site freely ? I 
mean 
> is there a way to get httrack slower ?
- Use options: (example)
Set options / limits / max tranfer rate: 5000
Set options / limits / max connections/seconds: 1
Set options / flow control / number of connections: 1 or 2

This should prevent any overload.