Hola.
http://glep.gentoo.org/glep-0031.html        <-- the details
http://bugs.gentoo.org/106544                <-- the bug
http://bugs.gentoo.org/attachment.cgi?=68828 <-- the patch

Attached the patch also; one additional tweak is that file.size is now 
a fatal check, since the tree seem's to finally be clean.
~harring