Please remove rsync2.jp.gentoo.org out of the rotation (rsync.gentoo.org & rsync.jp.gentoo.org). and remove mirror.gentoo.gr.jp from http://www.gentoo.org/main/en/mirrors.xml . The reason is a problem of hardware and traffic. Reproducible: Always
Kojima, Thank you so much for helping Gentoo out with multiple mirrors. As per your request, I've removed both rsync and distfile mirrors.
*** Bug 203505 has been marked as a duplicate of this bug. ***