I tried several time to mirror this site:
<http://www.goethe-verlag.com/book2/DE/INDEX.HTM>

There is a good multi-language learning course with mp3 and zip files, but
whenever i tried to mirror this site it seems to stop while downloading (0
bits/second downloading).

At this time those parts of the site are unreachable, but after a reboot it is
possible to reach this part in a browser.
My next step was to continue the interrupted download, but now it starts at a
different position.
The result is that previous saved information ~3Gb are lost.

I think there is a problem with the cache.

Switching from "continue interruped download" to "update.." makes no
difference.

Is there a way manualy edit the cache file in order to be sure that the
mirroring will not delate all the good files?