Quite easy to reproduce: Go to http://mail.wikipedia.org/mailman/htdig/wikien-l Click on any item in the "downloadable version" column, say the one for december 2006. It's a link to http://mail.wikipedia.org/mailman/htdig/2006-December.txt And htdig (?) then tells you "No such list 2006-december.txt". However, it should probably link to http://mail.wikimedia.org/pipermail/wikien-l/2006-December.txt as does http://mail.wikimedia.org/pipermail/wikien-l/ (to anticipate a response: Yes, I guess the very first link might not really be a good start page to browse the archive, yes, you should rather use the second one with the pipermail in it, yes, only the second one is linked. But still, as it delivers intelligible output, the links should be correct).

Michael