http://tango.freedesktop.org/

GET / HTTP/1.1
Host: tango.freedesktop.org
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1 Iceweasel/7.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Connection: keep-alive
Cache-Control: max-age=0

HTTP/1.0 500 Internal Server Error
Date: Wed, 09 Nov 2011 08:32:43 GMT
Server: Apache/2.2.16 (Debian)
X-Powered-By: PHP/5.3.3-7+squeeze3
Content-Encoding: gzip
Vary: Accept-Encoding
Content-Length: 26
Connection: close
Content-Type: text/html
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