the user having this issue was recently upgraded to MR4 MP1a. They were installing a piece of software when the terminal session screen went black and the graph appeared. I think this is more of a problem with the client and a remote desktop session because prior to MR4 being installed, this client did this same work several times with no issue. I don't think the server running MR3 with only the AV component would see this graph.
My situation isn't identical to the original poster. We saw this with a client connecting to a remote server using RDP, not going through a terminal server.
-Scott