After loading my last campaign save I see some very strange problems. The game seems a bit confused about what my city is named and who owns it, and one of the hero portraits has been changed. Screenshot says it best: http://imgur.com/tUhxI.jpg.
Edit: This is for v1.05. On load it uses another city's caption but renaming the city fixes the problem. All of the hero's stats, 3D model, etc. are ok, just the picture has changed.