I have set 9999 retries after failure in options. If 301, 302, 500, 504 or
other error occurs, sometimes, but not always when mirroring is near complete,
HTTrack retries to download these files, but it does not shows any active
connections and hts-log.txt filled up with same errors. About hundred errors
occurs per second mentioning same file while one connection per second limit
is set in options.