Fetching contacts on Symbian blocks the UI

import QtQuick 1.1
import QtMobility.contacts 1.1

Rectangle {
    width: 360
    height: 640

    ListView {
        anchors.fill: parent
        model: ContactModel {id: contacts}
        delegate: Text {
            text: contacts.contacts[index].name.firstName + " " +  contacts.contacts[index].name.lastName
        }
    }

    Rectangle {
        anchors.centerIn: parent
        width: 50
        height: 50
        color: "red"
        NumberAnimation on rotation {
            running: true
            duration: 1000
            from: 0
            to: 360
            loops: Animation.Infinite
        }
    }
}