I would notify to other "peones" that like me are struggling to get akonadi
working with nepomukserver, I have not any error messages when akonadi starts,
i have changed into
~/.kde/share/config/nepomukserverrc
Used Soprano Backend=redland
with:
Used Soprano Backend=virtuosobackend
i think that this change was missed by automatic scripts migration to kde 4.4
m.