Problem: Piechart shows blank when datapoint value is 10803

Env: The Netadvantage WPF version is Infragistics3.Wpf.Chart.v8.1.dll.  

And Visual studio 2008 SP1(Version 9.00.30729.01) and .net framework3.5sp1.  

My OS is Windows 2003 Enterprise Server SP2.

Failed case1.

<Window x:Class="WpfApplication7.Window1"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:igChart="http://infragistics.com/Chart"        

    Title="Window1" Height="300" Width="300">

    <Grid>

        <igChart:XamChart>

            <igChart:XamChart.Series>

                <igChart:Series ChartType="Pie">

                    <igChart:Series.DataPoints>                       

                        <igChart:DataPoint Value="10803"/>                      

                    </igChart:Series.DataPoints>

                </igChart:Series>

            </igChart:XamChart.Series>            

        </igChart:XamChart>

    </Grid>

</Window>