As stated above, there was some sort of mix up on the packages included in yesterday's update, including systemd.
I reported a bug on launchpad for Kubuntu about the same time as someone posted the same for Ubuntu. It was resolved in less than two hours.
If you are still getting errors with app indicators, check Launchpad to see if it has been reported. I'm thinking there were a lot more messed up packages and they fixed some of the critical ones last night and are still working on others.
By the way, I was hit with problems with logout, sound and networkmanager's app indicator, all of which were in the pile of corrected stuff by about 1:00am Pacific time.