Thanks Rob for reply
Just a note to better explain my thoughts about upgrades.
They are of course risky, and we all are aware of that and have to accept when things go wrong.
In past upgrades I experienced several issues, that in the end were minor issues that could be solved with a bit of patience and that never forced me to start from scratch.
Last two updates set a totally new course. I still didn't realized whether I have been terribly lucky with past upgrades or if actually with .40 and .41 there are some significant issues that may be worth a closer look.
I'm just reporting this because I think it can be useful for further Pluto improvement.
FYI: I have same experience. Last two updates got me into a lot of trouble (mainly those who helped me :-) ). So I went with fresh install of 0.40 , but have also problems on 0.41 upgrade....