We have added several packages to Scientific Linux 4.2 that were not in the Scientific Linux 4.0, or 4.1 release.

ksh
Summary : Korn Shell 93
Added for those users who want to use it. This is not installed by default.

Yumex
yumex
yumex-applet

Summary : Graphical Front End to Yum, as well as a replacement to the up2date applet.
Added for those users who want to use a graphical front end for yum. This is not installed by default.

Yum Utils
yum-utils
yum-updateonboot
yum-changelog
yum-installonlyn
yum-protectbase
yum-tsflags
yum-versionlock

Summary : Plugin's and Utilities to expand yum
Added for those users who want to use it. The one plugin, kernel-module, is built into the S.L. version of yum 2.4. These are not installed by default.