LS.
Unfortunately it seems that contents scientificlinux repo are not up-to-date.
When issuing command
# yum update openssl
It searches for
openssl-0.9.8e-31.el5_11.x86_64
openssl-devel-0.9.8e-31.el5_11.x86_64
And for some days, this was ok, but now, it seems only these versions are in repo
ftp://ftp.scientificlinux.org/linux/scientific/5x/x86_64/updates/security/
File:openssl-0.9.8e-27.el5_10.3.x86_64.rpm
File:openssl-0.9.8e-27.el5_10.4.x86_64.rpm
So, the update will fail, because 0.9.8e-31 versions are not available.
This looks to have changed suddenly, so some of my servers have auto-yum-updated ok, and others show a yum-error.
Carel van der Werf