Jetpack plugin not fully connecting

When I try to connect to Jetpack it simply reports that it has connected successfully but when I return to my dashboard I still get the Connect to Jetpack button as if connection failed. And I don’t get any stats. I looked at the debug link at the bottom and found this. Can anyone help me fix it:

  [body] => {"error":"Communication error","error_description":"We were unable to make an XML-RPC request to your website. Please make sure that XML-RPC is turned on and that Jetpack is installed, activated and connected with your WordPress.com account. If the error persists, try disconnecting and connecting Jetpack again."}
    [response] => Array
        (
            [code] => 400
            [message] => Bad Request
        )

    [cookies] => Array
        (
        )

    [filename] => 
    [http_response] => WP_HTTP_Requests_Response Object
        (
            [response:protected] => Requests_Response Object
{"error":"Communication error","error_description":"We were unable to make an XML-RPC request to your website. Please make sure that XML-RPC is turned on and that Jetpack is installed, activated and connected with your WordPress.com account. If the error persists, try disconnecting and connecting Jetpack again."}
                    [raw] => HTTP/1.1 400 Bad Request

{"error":"Communication error","error_description":"We were unable to make an XML-RPC request to your website. Please make sure that XML-RPC is turned on and that Jetpack is installed, activated and connected with your WordPress.com account. If the error persists, try disconnecting and connecting Jetpack again."}
                    [headers] => Requests_Response_Headers Object
                        (
        )