4. Build-Depends - Depends (aka invalid listing in Build-Depends) http://wiki.debian.org/BerkeleyDB/InvalidBuild-Depends
Packages in list 4 should be fixed because it means either one of:
1. The Build-Depends listing is erroneous (f.e. upstream dropped support for Berkeley DB) 2. The build process is broken (f.e. aka doesn't recognize libdb5.1) and needs fixing.
Or they are correct as they really use Berkeley DB only during build time. It is the case at least for kfreebsd-*. Petr