I have the same problem on my computer. I have two users. One has Cairo Dock set to run at startup the other doesn't. The user without Cairo Dock doesn't have this problem.
When I first log in the user without CD and than log in the other user and click the Shutdown button it makes the dialog show up again.
I have the same problem on my computer. I have two users. One has Cairo Dock set to run at startup the other doesn't. The user without Cairo Dock doesn't have this problem.
When I first log in the user without CD and than log in the other user and click the Shutdown button it makes the dialog show up again.