> But, upon my second use of it, along came a sort of
> strange "overwritings", most of which ended up in
> ERASING many files, not to mention complete folders
> from the previous session. And nothing I could do
> helped to recover what was erased, neither I was
> able to see the "why" of it, 
You lost connection with the site, net went down or the site crashed. You have
Do Not Purge Files unchecked. So all pages not mirrored and all files linked
were deleted. That's the "why."


> 2) Additionally, I don't see the point of
> downloading ".tmp"s, either. It's my impression such
You are not download tmp's. The tmp's are Httrack internal processing when
html files are download delayed. They are small binary files and are removed
once the actual file has been downloaded.