I have a 2010 MacBook pro and recently created another administrative account and deleted my old administrative account in order to clear the information that was on it. Ever since, I have three icons in my dock. LOGIN server, NET server, and USB server. They are lit up underneath as if they are in use, and I cannot quit out of them because they are in use. I also cannot remove the icon from my doc with the drag to "poof" shortcut delete feature, because they are in use. How can I remove this from my dock???