I am encountering with a strange problem with the Quick Launch area on a pair of our Terminal servers. I am also finding difficult to rearrange the order of the icons in the Quick launch section on the toolbar. I’m also able to drag the additional icons into the Quick Launch area and then place it anywhere and I can also delete any of the icons. I just can't rearrange them. Yet I have a couple of other terminal servers wherein I’m able to rearrange the order of the icons easily.

Any aid would be very much appreciated.