Binary package hint: update-manager
During Natty development, kdegames-card-data-extra was split (so that at least one game could be put on the CD) and all but one card deck put in kdegames-card-data-extra. As a result, upgraders that had installed it before lose almost all of their card decks. I ran into this and thought initially I had a problem.
I think it would be good if update-manager could check if kdegames-card-data is installed and if kdegames-card-data-extra is available and if so, install kdegames-card-data-extra as part of the upgrade. kdegames-card-data was not included in the default install previously so any upgrader with it installed did it (probably as a card game dependency) and so it would be a regression for them to lose almost all their card decks.