Simple HTTP POST to Wifi Thermostat. HELP NEEDED

Using Arduino Programming Questions
23

Hello Have just tried to change to your suggestion, it also do not work. =( =( =(

Starting ethernet...192.168.10.150
Ready
connecting...connected
HTTP/1.1 400 Bad Request
Date: Tue, 19 Feb 2013 07:22:27 GMT
Server: Apache/2.2.22 (Ubuntu)
Content-Length: 730
Vary: Accept-Encoding
Connection: close
Content-Type: text/html; charset=UTF-8


    <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
    <html>
        <head>
            <title>Error: 400 Bad Request</title>
            <style type="text/css">
              html {background-color: #eee; font-family: sans;}
              body {background-color: #fff; border: 1px solid #ddd;
                    padding: 15px; margin: 15px;}
              pre {background-color: #eee; border: 1px solid #ddd; padding: 5px;}
            </style>
        </head>
        <body>
            <h1>Error: 400 Bad Request</h1>
            <p>Sorry, the requested URL <tt>&#039;http://xxxx.yyyyyyy.dk/invput&#039;</tt>
               caused an error:</p>
            <pre>Invalid format string</pre>
        </body>
    </html>

disconnecting.
Pass 1

else any Ider :~ :~ :~