> > having the same structure and files. The client's
> > server address is changed on each new access by a
> > round robin method.
> 
> Err - you are mirroring the same IP address each
> time, are you ? (ie. when updating, you are using
> the same IP address ?)
> 
> If not, the redownload is perfectly normal: the site
> host is seen as another one. This should be the case
> for 3.3X series, too.

Many sites use multiple servers for load balancing. If you're mirroring by
host name, the IP address shouldn't be looked at.