The following FASTBUGS have been uploaded to

http://ftp.scientificlinux.org/linux/scientific/6x/i386/updates/fastbugs/
http://ftp.scientificlinux.org/linux/scientific/6x/x86_64/updates/fastbugs/

i386:
coreutils-8.4-19.el6_4.1.i686.rpm
coreutils-libs-8.4-19.el6_4.1.i686.rpm
libvirt-0.10.2-18.el6_4.3.i686.rpm
libvirt-client-0.10.2-18.el6_4.3.i686.rpm
libvirt-devel-0.10.2-18.el6_4.3.i686.rpm
libvirt-python-0.10.2-18.el6_4.3.i686.rpm

x86_64:
coreutils-8.4-19.el6_4.1.x86_64.rpm
coreutils-libs-8.4-19.el6_4.1.x86_64.rpm
libvirt-0.10.2-18.el6_4.3.x86_64.rpm
libvirt-client-0.10.2-18.el6_4.3.i686.rpm
libvirt-client-0.10.2-18.el6_4.3.x86_64.rpm
libvirt-devel-0.10.2-18.el6_4.3.i686.rpm
libvirt-devel-0.10.2-18.el6_4.3.x86_64.rpm
libvirt-lock-sanlock-0.10.2-18.el6_4.3.x86_64.rpm
libvirt-python-0.10.2-18.el6_4.3.x86_64.rpm