i'm not familiar with Ding, but is it possible that the icon is just being hidden? with newer version of windows, by default, it hides the tray icons of applications that are inactive for a while but if you click the << just to the left of them, it shows all of them. if it still shows Ding, what you can do is right-click on the time displayed on the right, click on properties at the bottom. on the taskbar tab, at the bottom is an option to hide inactive icons. you can either uncheck that or if you click on customize, you can specify for each application whether to hide when inactive / always hide / always show. so you can make ding always show.