Cannot install Edgy

Binary package hint: kubuntu-desktop

I tried to install Kubuntu edgy. But I've got following errors:
I'm using fglrx ATI drivers.

maverick:~# apt-get install kubuntu-desktop 17:59
Reading package lists... Done
Building dependency tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  kubuntu-desktop: Depends: digikam but it is not going to be installed
                   Depends: libgl1-mesa-glx but it is not going to be installed
                   Depends: xorg but it is not going to be installed
E: Broken packages

maverick:~# apt-get install kubuntu-desktop digikam libgphoto2-2-dev libexif-dev libc6-dev xorg libgl1-mesa-glx libgl1-mesa-dri libgl1-mesa 17:49
Reading package lists... Done
Building dependency tree... Done
libgl1-mesa-dri is already the newest version.
libgl1-mesa is already the newest version.
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  libgl1-mesa: Conflicts: libgl1
  libgl1-mesa-glx: Conflicts: libgl1
                   Conflicts: libgl1-mesa
E: Broken packages