The following FASTBUGS have been uploaded to

http://ftp.scientificlinux.org/linux/scientific/5x/i386/updates/fastbugs/
http://ftp.scientificlinux.org/linux/scientific/5x/x86_64/updates/fastbugs/

i386:
kexec-tools-1.102pre-161.el5_9.1.i386.rpm
sudo-1.7.2p1-22.el5_9.1.i386.rpm

x86_64:
kexec-tools-1.102pre-161.el5_9.1.x86_64.rpm
sudo-1.7.2p1-22.el5_9.1.x86_64.rpm