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

iwp2100 & ipw2200 firmware
Summary : Firmware for the Intel� PRO/Wireless 2100 and 2200 Driver.
Added because we had the network drivers, but not the firmware that went with them. These are installed by default.

j2sdk
Summary : This packages is the java sdk from sun.
Added because many developers and users wanted it. Not installed by default.

Cluster Suite
ccs-devel-1.0.0-0.i386.rpm
cman-1.0.0-0.i386.rpm
cman-kernel-2.6.9-36.0.i686.rpm
cman-kernel-hugemem-2.6.9-36.0.i686.rpm
cman-kernel-smp-2.6.9-36.0.i686.rpm
cman-kernheaders-2.6.9-36.0.i686.rpm
dlm-1.0.0-0.i386.rpm
dlm-devel-1.0.0-0.i386.rpm
dlm-kernel-2.6.9-34.0.i686.rpm
dlm-kernel-hugemem-2.6.9-34.0.i686.rpm
dlm-kernel-smp-2.6.9-34.0.i686.rpm
dlm-kernheaders-2.6.9-34.0.i686.rpm
fence-1.32.1-0.i386.rpm
gulm-1.0.0-0.i386.rpm
gulm-devel-1.0.0-0.i386.rpm
iddev-2.0.0-0.i386.rpm
iddev-devel-2.0.0-0.i386.rpm
ipvsadm-1.24-6.i386.rpm
magma-1.0.0-0.i386.rpm
magma-devel-1.0.0-0.i386.rpm
magma-plugins-1.0.0-0.i386.rpm
perl-Net-Telnet-3.03-3.noarch.rpm
piranha-0.8.0-1.i386.rpm
rgmanager-1.9.34-1.i386.rpm
system-config-cluster-1.0.12-1.0.noarch.rpm
Summary : All the tools needed to build a several different types of clusters.
Added because many Scientific Linux users build clusters. Not installed by default.

GFS
GFS-6.1.0-0.i386.rpm
GFS-kernel-2.6.9-35.5.i686.rpm
GFS-kernel-hugemem-2.6.9-35.5.i686.rpm
GFS-kernel-smp-2.6.9-35.5.i686.rpm
GFS-kernheaders-2.6.9-35.5.i686.rpm
gnbd-1.0.0-0.i386.rpm
gnbd-kernel-2.6.9-8.27.i686.rpm
gnbd-kernel-hugemem-2.6.9-8.27.i686.rpm
gnbd-kernel-smp-2.6.9-8.27.i686.rpm
gnbd-kernheaders-2.6.9-8.27.i686.rpm
lvm2-cluster-2.01.09-5.0.RHEL4.i386.rpm
Summary : The Global File System
Added for those users that need or want GFS. Not installed by default.

Documentation
rhd-dg-en Desktop Deployment Guide
rhel-ig-x8664-multi-en Installation Guide
rhel-isa-en Intro System Admin Guide
rhel-rg-en Reference Guide
rhel-sag-en System Administrator Guide
rhel-sbs-en Step-by-Step Guide
rhel-selg-en SElinux Guide
rhel-sg-en Security Guide
rh-glossary-en Glossary
Summary : Various detailed documentation
Added because they are very useful. Not installed by default