@myki, @boriar
Thank you both for your valuable input. I will keep your ideas for a later point. For now, I think I will leave things as they are.
The two designations are not very speaking, this is true. However, if the user is unsure which update mode to choose she can select "info" and will get an explanation. If for some reason she can still not decide, there are several options:
- cancel the update and postpone the decision (con: you will not be able to use nickel from this point onwards)
- delete the update
- select any of the two update modes. If KSM is disabled and this was not intended, one has toenable KSM again.