Neat...not sure that I really nkown enough to start digging to easily figure out what went wrong, but it can be reproduced by running the following:
$ wget -d -r -l 5 -t 1 -T 30 -o x.lg -p -s -P dir -Q 5000000 --limit-rate=256000 -R mpg,mpeg http://www.netcraft.co.uk wget: recur.c:753: register_download: Assertion `!hash_table_contains (dl_url_file_map, url)' failed. Aborted (core dumped) Because it appeared to have aborted on a file with a ".2" extension (multiple files with same name downloaded), I tried adding the "-nc" option. No joy - same problem. Cheers, Thomas