I've just upgraded to version 8.0.1 and before the upgrade, I loaded FF and on my taskbar it would just be highlighted to show you've got that programme open. Now it opens another FF icon along the taskbar and it keeps doing that everytime you open another window. Before it would just have sort of a little shadow of another page behind the icon to show you've got more than one window open. How do you stop it opening another icon on taskbar?