Short interrupt problems with Dutch newspaper site?

See: ontent after the < /html> tag should be considered suspicious.

8: < !-- a padding to disable MSIE and Chrome friendly error page → 4x
I get a HTTP/1.1 502 Bad Gateway error…
I see [iframe] www.facebook.com/plugins/likebox.php? etc] in the code
(iframe) csmcampagne.consumind dot nl/telegraaf/telegraaf.html
Now the page seems to resolve fine: htxp://www.telegraaf.nl/
and back to a HTTP/1.1 200 OK …What was that hick-up (attack - server migration?)

polonus