> instead, httrack could create seperate log files with a
> date/time stamp, like hts-log-<date><time>.

Weel, why not.. but many scripts now rely on "hts-log.txt" 
to count the number of errors and their location.. so this 
would be more difficult. I could rename "old" log files, 
however, but many users will also complaint about "growing" 
log files.. so this is not an option I would put by 
default ; but anyway this might be done in the future.