Some essential Unity packages not installed after Natty upgrade

Last Sunday (2011-04-10) I upgraded to Natty with the update-manager (using -d option). Everything went fine as there were no errors reported.
After I restarted my default desktop was Unity (in maverick I had it's default gnome), and it worked fine, but I discovered there were some packages not installed in my system that reduced the Unity functionality.

unity-place-applications
unity-place-files
indicator-appmenu

The time indicator was also missing.

The result was that my unity after the upgrade did not show the gtk applications menu in the top panel, I could not find files or applications from the launcher and Firefox 4.0 did not have the application menu displayed on the top panel either.

After I installed those missing packages everything looked like the natty Live CD unity.

Is this a dependency problem? Those packages are optional for Unity, but they should be required by the ubuntu-desktop package.

Should this question be turned into a bug?