> I have recently been trying to get a few sites but 
suddenly
> found that httrack won't work on them for some reason :
> - <http://www.furiae.com>

Uses (recently, maybe?) nasty javascript (such as 
textfilePopup() functions) that can not be properly handled

> - <http://www.robertocampus.com>
>   For some reason httrack fails to get images from the 
site
> even though the images are on the same domain (as far as I
> can tell).

Did you check the error log ? :)
09:32:58 Info:  Note: due to www.robertocampus.com remote 
robots.txt rules, links begining with these path will be 
forbidden: /cgi-
bin, /images, /wendy, /campusfamily, /dreamwave, /comics, /u
don, /zev (see in the options to disable this)

> - <http://www.steveferris.com>
>   The site uses swf files before linking to the images. 
The
> swf files are downloaded fine, but none of the images are.

It seems that some galleries are not working properly - i 
don't have explaination, however (bug embedded links ar 
enot modified inside swf files, this might explain the bugs)