> Installed packages with a version not in the database (or masked):

As it says this apps are either not in the database or masked.

kde-base/kdeaddons-docs-konq-plugins-3.5.9 masked
kde-base/kdeaddons-kfile-plugins-3.5.9 masked
kde-base/kdeaddons-meta-3.5.9 masked
sys-kernel/gentoo-sources-2.6.23-r3 not in the tree and thus not in the
eix-database anymore.
x11-apps/xinit-1.0.5-r2 masked

I guess portage will downgrade the masked ones if you run emerge -uND
world, so if you want them put them in package.keywords. You can remove
gentoo-sources from /etc/portage/package.whatever as it is not in the
tree anymore.

Regards,

Daniel
--
gentoo-user@(protected)