Someone, for some reason, has written a script which asks for the language "vi" (Vietnamese) at
www.sljfaq.org/cgi/e2k.cgi, and then keeps running this script every day.
What this does is create error messages, since there is no Vietnamese output available, only English and Japanese. This has been going on for about two weeks. I don't know what the person is trying to achieve by doing this, but to be clear in this era of widely available computer translation I do not intend to add Vietnamese output to the site, and continually running this script and creating errors is getting a little bit boring now, so what I'll do if this keeps happening is to block the user's address and if that doesn't work I'll force a blank output if someone requests a nonexistent language output.
Sorry to send this to the mailing list to all the people who aren't causing this problem.