> (Download contains about 400MB size, excluding the
> log file which is relatively large). I checked the
> downloaded folder structure and I see a lots of
> files with 'htm.tmp' extension. What are they? If I
> rename them I see they have the content. 

tmp files are internal processing data and will be removed once the
corresponding file is downloaded.

I have a 20GB mirror with 71000 files. the log file is 8MB
Do you have logging set to normal.