What kind of problems would attempting to build the DVI or PDF manual really catch these days, which aren't already triggered by attempting to make the *.info manual?
Building dvi/pdf definitely has a chance of catching errors, since it's a complete different Texinfo implementation (texinfo.tex vs. makeinfo). Also there's the question of ensuring that images are included in the distribution, which is what brought up this whole question. However, I don't think these rather minor benefits outweigh the pain for maintainers of building dvi (or pdf) by default, so changing automake to not build dvi as part of distcheck seems good to me. For GNU packages, dvi and pdf will normally be tested anyway as part of a release, due to the need to upload the new manuals to www.gnu.org. Perhaps we should remove dvi from there ... -k