I traced this part now. It seems that it is not NetworkManager per se, but rather start-stop-daemon complaining that NetworkManager is already running. Now I have to find which other mechanism has started NetworkManager earlier. The rc*.d links look perfectly ok... Looking...
This now could be an upgrade issue or a subtle change in ubuntu usage of runlevels...
I traced this part now. It seems that it is not NetworkManager per se, but rather start-stop-daemon complaining that NetworkManager is already running. Now I have to find which other mechanism has started NetworkManager earlier. The rc*.d links look perfectly ok... Looking...
This now could be an upgrade issue or a subtle change in ubuntu usage of runlevels...