It's the same with ClockX on my LiberKey.
That occurs when you have more than one shortcut for an application in your LiberKey. So if you sometimes open ColorConsole by going through the menu and sometimes click on the Icon in the righthand side of your LiberKey both Icons will appear in Most Used.
It's also the same with Recent. Try to open an application by using one shortcut, then close the application, then open it by clicking on an other shortcut. You will see that there will be two icons side by side for that application in recent.
So the LiberKey team has to do some homework.