"Not Responding" in task manager is a poor substitute for a status bar on long operations.
So many times, I've killed the processes (probably unnecessarily) in frustration as there is no indication within the program as to whether Civil3D is actually doing anything. See http://forums.autodesk.com/t5/autocad-civil-3d-general/how-do-you-know-when-civil3d-is-completely-de...
Even background tasks such as point cloud processing could benefit from some rudimentary status/progress bar, but most of all we need some indication that it's "worth hanging in there".
- Mick