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:
esc-1.1.0-25.el6_4.1.i686.rpm

x86_64:
esc-1.1.0-25.el6_4.1.x86_64.rpm