There is a version bump available for sci-libs/vtk-5.4.0. Reproducible: Always
I simply renamed the vtk ebuild to vtk-5.4.2.ebuild and it seems to have merged ok. I was not able to emerge the version in portage, so the new version must have solved some of the building problems reported elsewhere on the bugtracker.
vtk-5.4.2 is now in portage cvs. Thanks, Markus