Comment 1 for bug 631102

Possible fix:

Remove the file
 ~/.kde/share/apps/nepomuk/repository/main/data/virtuosobackend/soprano-virtuoso.trx
Evidently this is not compatible with the new virtuoso-t.
Also removed
/var/lib/virtuoso-opensource-6.1/db

Lost all the data, but I lost all that upgrading from 6.0 -> 6.1 anyway.

Rebooted, now nepomuk works, and virtuoso conductor works. There are two virtuoso processes, one for nepomuk and another for the regular database, and both seem to be coexisting.

Works in both Maverick and Lucid.