Last modified: 2005-02-27 06:02:52 UTC
An URL containing hex-encoded forward slash (%2F) causes Wikipedia to go to a neverending sequence of 301 Moved Temporarily, each adding a /wiki/ prefix. HTTP/1.0 301 Moved Permanently (...) Location: http://cs.wikipedia.org/wiki/wiki/Foo%2FBar (...) etc.
404 handler no longer tries to do the fatal redirects.