We searched every directory. We dusted every hard disk. We left no
pointer, no linked-list, no function call unturned. Try as we might,
we couldn't find the file that you asked for. Double-check the URL you
followed. If you typed it in yourself, make sure there aren't any
errors in it. If you followed a link on someone else's site, please
let them know their link was wrong, and if you can find the right
page, help them correct it. If you found a broken link on our site,
please mail us and let us know, so we can fix it.
From RFC 2068 Hypertext Transfer Protocol:
The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.