Why am i using over 80% CPU when just hovering some links? As you can see in the video i uploaded: http://www.youtube.com/watch?v=3ALF9NquTRE the CPU goes to >80% CPU when i move my mouse over the links.

My style for the items are as follows

    <Style x:Key="LinkStyle" TargetType="{x:Type Hyperlink}">
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Foreground" Value="White" />
            </Trigger>
        </Style.Triggers>
        <Setter Property="TextBlock.TextDecorations" Value="{x:Null}" />
        <Setter Property="Foreground" Value="#FFDDDDDD"/>
        <Setter Property="Cursor" Value="Arrow" />
    </Style>    

Why?