A lot of index.html.tmp files... wget spends a lot of time downloading files with the name index.html.tmp files, sometimes multiple copies in the same directory.  Is there a way to prevent this from happening?

This is my string:

wget -e robots=off -r -R htm,html -v -np -nc --wait=1 --no-check-certificate --waitretry=10 --random-wait --tries=20 --level=0 --input-file=dl_list.txt