We have a few challenging "power users" who know enough to be dangerous, but not enough to know the trouble they cause. The typical example is "this is slow, see I have run xyz command that proves it...", which leads to IT spending cycles proving the system(s) are behaving normally. A classic example is seeing an NFS slow warning, which is often misunderstood to be a problem.
How do you handle these users? Have you found a way to redirect their unhelpful habits into something useful?