yum - CentOS 6: installing .el5 rpms?

System has CentOS 6.2 32-bit installed. Im having some issues running 'yum update' - I get a series of errors that point to incorrect RPMs being installed (see this link: http://www.centos.org/modules/newbb/print.php?form=1&topic_id=34994&forum=56&order=ASC&start=0 )

[root@orange yum]# yum update
Finished Dependency Resolution
Error: Package: python-paramiko-1.7.6-1.el5.rf.noarch (rpmforge)
Requires: python(abi) = 2.4
Installed: python-2.6.6-29.el6.i686 (@anaconda-CentOS-201112130233.i386/6.2)
python(abi) = 2.6
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

I was following the thread and entered this cmd: rpm -qa | fgrep .el5 | less and found a number of entries.

[root@orange ~]# rpm -qa | grep .el5 | sort
fping-3.1-1.el5.rf.i386
hwloc-1.3-1.el5.rf.i386
libedit-20090923-3.0_1.el5.rf.i386
libffi-3.0.9-1.el5.rf.i386
libssh2-1.2.7-1.el5.rf.i386
nagios-nrpe-2.12-1.el5.rf.i386
nagios-plugins-1.4.15-2.el5.rf.i386
perl-Compress-Raw-Bzip2-2.037-1.el5.rf.i386
perl-Compress-Raw-Zlib-2.037-1.el5.rf.i386
perl-Crypt-DES-2.05-3.2.el5.rf.i386
perl-Data-UUID-1.203-1.el5.rf.i386
perl-Log-Message-Simple-0.06-1.el5.rf.noarch
perl-Module-Build-0.3607-1.el5.rf.noarch
perl-Module-CoreList-2.25-1.el5.rf.noarch
perl-Net-SNMP-5.2.0-1.2.el5.rf.noarch
perl-Test-Harness-3.22-1.el5.rf.noarch
perl-Test-Simple-0.98-1.el5.rf.noarch
perl-Time-Piece-1.20-1.el5.rf.i386
perl-YAML-0.72-1.el5.rf.noarch
portreserve-0.0.5-2.el5.rf.i386
powertop-1.13-1.el5.rf.i386

My repositories:

[root@orange yum]# yum repolist
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: linux.mirrors.es.net
* extras: centos.mirror.facebook.net
* rpmforge: mirror.hmc.edu
* updates: mirrors.cat.pdx.edu
repo id repo name
base CentOS-6 - Base
extras CentOS-6 - Extras
rpmforge RHEL 6 - RPMforge.net - dag
updates CentOS-6 - Updates

So my questions are:
1) How did I end up with these rpms?
2) I've tried to 'yum erase ' and then reinstall - I get the .el5 file again.

What am I doing wrong?

Answer

.rf. is telling you it's from RPMforge. Not sure why they would install but Yum figured they were compatible. Is there a problem with those packages or just yum update? I would disable RPMforge for the update. yum update --disablerepo=rpmforge. If the package exists in both repositories you will also end up with trouble.