Since the update to coreutils 6.9-1, chmod and fakeroot didn't work together any more. This resulted in wrong permissions in packages built with makepkg. The commands 'chmod', 'cp -a', 'install -mXXX' and similar didn't work properly in the build() function in some cases, which may also affect the 'make install' command.
All Developers, TUs and AUR users, please update to the fakeroot package to the latest version (1.5.10-2) and check all packages you built since the coreutils update. If there are permission errors in them, rebuild them.