kdelibs4c2a and other packages link against libfam0 at build-time, but only use FAM if famd is detected at run-time. Most users will want to use inotify for file monitoring instead of FAM, so famd should not be installed by default. However, kdelibs must build against libfam0 to provide file monitoring for those users who cannot use inotify.
The solution to this problem would be to change libfam0 dependency on fam from Recommends to Suggests. Packages that do require famd should specify "Depends: fam" explicitly.
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