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:
ksh-20100621-18.el5_10.1.i386.rpm

x86_64:
ksh-20100621-18.el5_10.1.x86_64.rpm