I turned on my hopper and there is a kangaroo in the bottom right side of my screen, and it doesn't go away. I changed channels and turned off the receiver and it stays.
It's the sign of a tuner conflict...someone trying to access or change one of the currently used tuners, IIRC. Perhaps is one of your Joeys or Hopper mirrored? Happened to a few times with a mirrored set.
You can change the menu settings so it doesn't make you see when you are sharing a tuner with another room. But that's all it means, you are sharing a tuner with another room/device
It's just for when the two tvs are watching the same thing. Can even be two joey linked to the same program. When I get home, I will post the steps to turn it off. Should be in menu>settings but I forget the path after that.
In the Whole-Home Setup Display Settings (Yellow - Blue - 4 - Display Settings) there are two settings, MoCA Quality Icon and Channel Change Notification, but I don't think they have anything to do with the Kangaroo.