I think in my case (see bug #355481) the problem is that rarian-compat "replaces", "conflicts" & "provides" the scrollkeeper package, while synaptic has a dependency on scrollkeeper, and ubuntu-desktop has a dependency on rarian-compat.
I think in my case (see bug #355481) the problem is that rarian-compat "replaces", "conflicts" & "provides" the scrollkeeper package, while synaptic has a dependency on scrollkeeper, and ubuntu-desktop has a dependency on rarian-compat.