QML Image element did not update properly on N900

import Qt 4.7

Rectangle {
    width: 480
    height: 800
    id:test

    function updateImage(){
        img.source = "http://172.18.2.150/upload/photos/portal/20100910-105832-test.j
    }

    Image {
        id: img
        asynchronous: true                               
        anchors.horizontalCenter: parent.horizontalCenter
        x:0 
        y:50      
        width: 300 
        height: 400
    }

               
    Rectangle {       
        id: rectangle1                
        anchors.bottom : parent.bottom
        width: test.width
        height: 80              
                color: "#440400"

        MouseArea {  
            id: mr              
            anchors.fill: parent                              
            onClicked: { parent.focus = true;updateImage();  }    //this doesnt work on the N900 but works on desktop
        }
     
    }

                                          
//    Component.onCompleted : updateImage();   //this works on both N900 and desktop

 
}