hi, i try to collect the problems, bugs and 'strange' things in current centos-5.6 release:
os/i386 these shouldn't have to be there (they are from older release): kmod-gfs-0.1.34-12 kmod-gfs-PAE-0.1.34-12 kmod-gfs-xen-0.1.34-12 centos-release-notes-5.5-0
updates/i386 these shouldn't have to be there (they are already in os): libtdb-1.2.1-5.el5.i386 libtdb-devel-1.2.1-5.el5.i386 m2crypto-0.16-6.el5.8.i386 tdb-tools-1.2.1-5.el5.i386 virt-manager-0.6.1-13.el5.i386
os/x86_64 these shouldn't have to be there (they are already in os): etherboot-pxes-5.4.4-13.el5.x86_64 etherboot-roms-5.4.4-13.el5.x86_64 etherboot-roms-kvm-5.4.4-13.el5.x86_64 etherboot-zroms-5.4.4-13.el5.x86_64 etherboot-zroms-kvm-5.4.4-13.el5.x86_64 libtdb-1.2.1-5.el5.x86_64 libtdb-devel-1.2.1-5.el5.x86_64 m2crypto-0.16-6.el5.8.x86_64 tdb-tools-1.2.1-5.el5.x86_64 virt-manager-0.6.1-13.el5.x86_64
anaconda different in i386 and x86_64 either both should have to be anaconda-11.1.2.224-1.el5.centos or both should have to be anaconda-11.1.2.224-1.el5.centos.1
in centos version of these packages the dist tag comes from earlier release. even if they are the same package they should have to rebuild with the same dist tag as in rhel (eg: .el5 <-> .el5_4): bogl-0.1.18-13.el5_4 bogl-bterm-0.1.18-13.el5_4 bogl-devel-0.1.18-13.el5_4 ctdb-1.0.112-1.el5_5 ctdb-devel-1.0.112-1.el5_5 gail-1.9.2-3.el5_4 gail-devel-1.9.2-3.el5_4 pax-3.4-2.el5_4 taskjuggler-2.2.0-5.el5_4 vino-2.13.5-9.el5_4
and a lots of updates still missing: cman-2.0.115-68.el5_6.1 conga-0.12.2-24.el5_6.1 dhcp-3.0.5-23.el5_6.4 giflib-4.1.3-7.3.3.el5 glibc-2.5-58.el5_6.2 java-1.6.0-openjdk-1.6.0.0-1.17.b17.el5 java-1.6.0-openjdk-1.6.0.0-1.18.b17.el5 java-1.6.0-openjdk-1.6.0.0-1.20.b17.el5 jwhois-3.2.3-12.el5 kexec-tools-1.102pre-126.el5_6.4 libuser-0.54.7-2.1.el5_5.2 libvirt-0.8.2-15.el5_6.1 mod_nss-1.0.8-4.el5_6.1 opensm-3.3.3-1.el5_6.1 openssh-4.3p2-72.el5_6.3 openswan-2.6.21-5.el5_6.4 pango-1.14.9-8.el5_6.2 paps-0.6.6-20.el5 postfix-2.3.3-2.2.el5_6 quota-3.13-5.el5 screen-4.0.3-4.el5 sed-4.1.5-8.el5 spice-xpi-2.2-2.3.el5_6.1 subversion-1.6.11-7.el5_6.1 subversion-1.6.11-7.el5_6.3 tomcat5-5.5.23-0jpp.17.el5_6 tzdata-2011d-3.el5 w3m-0.5.1-18.el5 wireshark-1.0.15-1.el5_5.3 xorg-x11-font-utils-7.1-3 xulrunner-1.9.2.14-4.el5_6