several kontact woes after upgrading to KDE 4.7

Ok, so I finally took the plunge and upgraded to KDE 4.7, and after a painful 
manual re-configuration because the migration thingie failed I have several 
questions left with kontact / kde pim:

- why does there have to be a virtuoso-t process doing nothing, but using up 
both CPU cores in the process?

- why does the default keyboard shortcut "+" for "next unread mail" not work 
anymore (it still IS the shortcut, just doesn't jump to the next folder 
anymore)

bye,
MH

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