This source file VirtualBox-4.3.10.tar.bz2 is used by different packages. Because of https://bugs.gentoo.org/show_bug.cgi?id=507338 the digest for app-emulation/virtualbox-4.3.10-r2 was adjusted. But this needs also be done for x11-drivers/xf86-video-virtualbox-4.3.10 and app-emulation/virtualbox-guest-additions-4.3.10 Reproducible: Always
Fixed. Thanks for the heads up and sorry for my misprision.