
Retro-fitting history?
It's not exactly the first time. I remember posting a link to an article on the BBC on Usenet many years back, and a couple of hours later had replies that the article didn't say what I had said it did -- they had kept the URL the same and changed the page. The net makes it far too easy to change pages and only if you are unlucky someone will have archived a copy (and even then proving that the archived version was valid is near impossible).
(It has ben commented before that the government seem to have read '1984' and thought it was a manual rather than a warning...)