Muon hanging

[Guest]

I'm upgrading to KDE 4.11 but muon is hanging at "waiting for configuration file". I checked the contents of /var/log/apt and found this:

Installing new version of config file /etc/kde4/kdm/backgroundrc ...
Installing new version of config file /etc/kde4/kdm/kdm.options ...

Configuration file `/etc/kde4/kdm/kdmrc'
==> Modified (by you or by a script) since installation.
==> Package distributor has shipped an updated version.
What would you like to do about it ? Your options are:
Y or I : install the package maintainer's version
N or O : keep your currently-installed version
D : show the differences between the versions
Z : start a shell to examine the situation
The default action is to keep your current version.
*** kdmrc (Y/I/N/O/D/Z) [default=N] ?

How can I take control of this? Muon didn't display a dialog

[Guest]

SOLVED: I quit muon then ran "sudo dpkg --configure -a" to fix this problem.