Tried several mirrors and I still get:
gentoo-jocke gentoo64 # emerge -avNDuv world
[ebuild U ] x11-libs/libX11-1.6.4 [1.6.3] USE="ipv6 -doc -static-libs
{-test}" ABI_X86="32 (64) (-x32)"
[ebuild U ] x11-libs/libXfixes-5.0.3 [5.0.2] USE="-static-libs"
ABI_X86="(64) -32 (-x32)"
[ebuild U ] x11-libs/libXrender-0.9.10 [0.9.9] USE="-static-libs"
ABI_X86="32 (64) (-x32)"
[ebuild U ] x11-libs/libXi-1.7.7 [1.7.6] USE="-doc -static-libs"
ABI_X86="(64) -32 (-x32)"
[ebuild U ] x11-libs/libXrandr-1.5.1 [1.5.0] USE="-static-libs"
ABI_X86="(64) -32 (-x32)"
[ebuild U ] x11-libs/libXv-1.0.11 [1.0.10] USE="-static-libs" ABI_X86="(64)
-32 (-x32)"
[ebuild U ] x11-libs/libXtst-1.2.3 [1.2.2] USE="-doc -static-libs"
ABI_X86="(64) -32 (-x32)"
[ebuild U ] sys-apps/man-pages-4.07 [4.06] USE="nls" L10N="-da -de -fr -it
-ja -nl -pl -ro -ru -zh-CN"
[ebuild U ] net-wireless/wpa_supplicant-2.6 [2.5-r2] USE="dbus gnutls hs2-0
qt4 readline ssl -ap -eap-sim
-fasteap (-libressl) -p2p (-ps3) -qt5 (-selinux) -smartcard -tdls
-uncommon-eap-types (-wimax) -wps"
Would you like to merge these packages? [Yes/No]
>>> Verifying ebuild manifests
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libX11/libX11-1.6.4.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 1619
!!! Expected: 1620
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXfixes/libXfixes-5.0.3.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 709
!!! Expected: 710
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXrender/libXrender-0.9.10.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 649
!!! Expected: 650
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXi/libXi-1.7.7.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 973
!!! Expected: 974
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXrandr/libXrandr-1.5.1.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 798
!!! Expected: 799
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXv/libXv-1.0.11.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 669
!!! Expected: 670
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXtst/libXtst-1.2.3.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 831
!!! Expected: 832
!!! Digest verification failed:
!!! /usr/portage/net-wireless/wpa_supplicant/wpa_supplicant-2.6.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 10295
!!! Expected: 10296
>>> Emerging (1 of 9) x11-libs/libX11-1.6.4::gentoo
>>> Jobs: 0 of 9 complete, 1 runningLoad avg: 0.77, 0.36, 0.22
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libX11/libX11-1.6.4.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 1619
!!! Expected: 1620
>>> Failed to emerge x11-libs/libX11-1.6.4
>>> Jobs: 0 of 9 complete, 1 failed Load avg: 0.77, 0.36, 0.22
*** Resuming merge...
>>> Emerging (1 of 8) x11-libs/libXfixes-5.0.3::gentoo
>>> Jobs: 0 of 8 complete, 1 runningLoad avg: 0.73, 0.37, 0.22
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXfixes/libXfixes-5.0.3.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 709
!!! Expected: 710
>>> Failed to emerge x11-libs/libXfixes-5.0.3
>>> Jobs: 0 of 8 complete, 1 failed Load avg: 0.73, 0.37, 0.22
*** Resuming merge...
>>> Emerging (1 of 7) x11-libs/libXrender-0.9.10::gentoo
>>> Jobs: 0 of 7 complete, 1 runningLoad avg: 0.78, 0.39, 0.23
!!! Digest verification failed:
!!! /usr/portage/x11-libs/libXrender/libXrender-0.9.10.ebuild
!!! Reason: Filesize does not match recorded size
!!! Got: 649
!!! Expected: 650
>>> Failed to emerge x11-libs/libXrender-0.9.10