I installed virtuoso-opensource-6.1-bin which worked but it was slow and I removed it.
Then I removed $HOME/.kde/share/apps/nepomuk/ and .kde/share/config/nepomuk*
I made a link of libjvm.so
ln -s /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server/libjvm.so /usr/lib/libjvm.so
and I installed soprano-backend-sesame & python-sesame.
The problem is it does not work.
I created a new nepomukserverrc file
Used Soprano Backend=sesame2
but again it does not work.
I get the error message
Nepomuk Semantic Desktop needs the Virtuoso RDF server to store its data. Installing the Virtuoso Soprano.
If I install virtuoso it does not use sesame.
What is wrong here?