Binary package hint: nfs-kernel-server
During the upgrade from Dapper to Edgy, the following happend:
1. Upgrade manager began to install updated packages.
2. When it was the turn of nfs-kernel-server it showed the "Modified configuration file dialog" notifying me, that the configuration file was modifed.
(This dialog is different from all other cases of modified configuration files.)
3. The dialog gave me the options to "use the maintainers file", "keep the file" or "view the differences" (and some more, I think)
4. I chose "view the differences".
5. The differences are shown in the terminal widget in the upgrade managers window. This is I think quit unclever, since many people may have this widget beeing collabsed and aren't looking there. (In other cases the diff is presented by default, but inside a graphical window.)
6. To quit the diff viewer in the terminal widget it is necessary to press 'q', which is never suggested. This is quite nerdy :-)
I think it would be better to show the diffs by default and use the graphical diff viewer.
I can confirm this issue. I was thrown completely off track here. I didn't guess that I had to press 'q' at all. Also, when I clicked on the terminal widget (to look at the differences) and then clicked on the 'Modified configuration file dialog' again, the rendering of that dialog became quirky (no "redraw" or something?), and I couldn't choose anything in the dialog anymore. I opened another shell and ran 'ps ax | grep debconf' and noticed that debconf was still running. Since the upgrade process was stuck, I simply killed the debconf process. I got an error message that nfs-kernel-server could not be installed and that I should report the bug, which I did. ;-)