Background clipboard

[Duane Clark <fpga@xxxxxxxxxxx>]

On a somewhat stock F7 system, when I simply login and open up a 
terminal, and then try to run the command:
> xclipboard
Error: another clipboard is already running

Is there really some clipboard running? If so, what is this other 
clipboard (I guess something built into gnome?), and can it be easily 
turned off?