> > How can I force httrack to never download files
> that 
> already
> > exists locally, even if they are different. 
> 
> Err, did you use the "Continue an interrupted
> mirror", 
> instead of "Update .." ?> 
> This option should always take contents from the
> local 
> cache, IF available, avoiding re-downloads.

In my experience that doesn't help much, httrack's still trying to update
dynamic pages (which is "all pages" in modern websites). I've had some luck
with using -C1 instead of the default -C2, though.

(from <http://www.httrack.com/html/fcguide.html>: C  create/use a cache for
updates and retries (C0 no cache,C1 cache is prioritary,* C2 test update
before) )