It would take considerably amount of time to start extracting tarballs, installing ebuilds, and reporting bugs about possible broken .png files within packages. The problem is broken IDAT lenght, an error that libpng15 still gracefully ignored, but libpng16 no longer ignores.
The bug, http://bugs.gentoo.org/468386 List created by Tobias at 2013 May, https://bugs.gentoo.org/attachment.cgi?id=347306 <mailto:klaus...@gentoo.org> This has been discussed on the ML before, and most important packages got already fixed, but there are packages still left. Any help addressing the issue is welcome, and I'm sending this mail in hopes people will see packages on the lists that intrest them, and fix them. Thanks, Samuli <mailto:klaus...@gentoo.org>