I think you can also upgrade from 7.1.x to 7.2 using yum if you enable the 'smeupdates-testing' repository, but I'm not sure...
If so, you'd do it like this: yum --enablerepo=smeupdates-testing update
I tried the above on my up-to-date-as-of-yesterday(6/15/07) 7.1.3 system and got back the updates listed below. I can't tell you if it worked, 'cause I answered 'N'... =============================================================================
Package Arch Version Repository Size
=============================================================================
Installing:
kernel i686 2.6.9-55.EL smeupdates-testing 11 M
kernel-smp i686 2.6.9-55.EL smeupdates-testing 11 M
Updating:
DCC i386 1.3.57-18.el4 smeupdates-testing 1.3 M
LPRng i386 3.8.29-3.el4.sme smeupdates-testing 1.8 M
clamav i386 0.90.3-1.el4.rf smeupdates-testing 997 k
clamav-db i386 0.90.3-1.el4.rf smeupdates-testing 9.5 M
clamd i386 0.90.3-1.el4.rf smeupdates-testing 76 k
daemontools i386 0.76-6.el4.sme smeupdates-testing 56 k
diald i386 1.0-3.el4.sme smeupdates-testing 136 k
dovecot i386 1.0-1.2.rc15.el4.sme smeupdates-testing 1. 3 M
dstat noarch 0.6.6-1.el4.rf smeupdates-testing 67 k
e-smith-LPRng noarch 1.14.0-5.el4.sme smeupdates-testing 41 k
e-smith-apache noarch 1.2.0-13.el4.sme smeupdates-testing 66 k
e-smith-backup noarch 1.14.0-14.el4.sme smeupdates-testing 68 k
e-smith-base i386 4.18.0-58.el4.sme smeupdates-testing 331 k
e-smith-dnscache noarch 1.0.0-6.el4.sme smeupdates-testing 40 k
e-smith-email noarch 4.16.0-21.el4.sme smeupdates-testing 139 k
e-smith-formmagick noarch 1.4.0-5.el4.sme smeupdates-testing 42 k
e-smith-horde noarch 1.13.0-21.el4.sme smeupdates-testing 77 k
e-smith-hosts noarch 1.14.0-7.el4.sme smeupdates-testing 58 k
e-smith-imap noarch 1.4.0-9.el4.sme smeupdates-testing 40 k
e-smith-imp noarch 1.13.0-10.el4.sme smeupdates-testing 60 k
e-smith-ingo noarch 1.1-6.el4.sme smeupdates-testing 24 k
e-smith-ldap noarch 4.12.0-6.el4.sme smeupdates-testing 50 k
e-smith-lib noarch 1.18.0-16.el4.sme smeupdates-testing 128 k
e-smith-manager noarch 1.14.0-7.el4.sme smeupdates-testing 74 k
e-smith-mysql noarch 1.12.0-14.el4.sme smeupdates-testing 45 k
e-smith-netatalk noarch 1.14.0-6.el4.sme smeupdates-testing 35 k
e-smith-nutUPS noarch 1.2.0-14.el4.sme smeupdates-testing 19 k
e-smith-openssh noarch 1.12.0-9.el4.sme smeupdates-testing 46 k
e-smith-packetfilter noarch 1.18.0-6.el4.sme smeupdates-testing 57 k
e-smith-php noarch 1.12.0-4.el4.sme smeupdates-testing 23 k
e-smith-pptpd noarch 1.12.0-10.el4.sme smeupdates-testing 52 k
e-smith-proftpd noarch 1.12.0-8.el4.sme smeupdates-testing 48 k
e-smith-proxy noarch 4.14.0-6.el4.sme smeupdates-testing 50 k
e-smith-qmail noarch 1.10.0-13.el4.sme smeupdates-testing 70 k
e-smith-radiusd noarch 1.0.0-16.el4.sme smeupdates-testing 53 k
e-smith-runit noarch 1.0.0-5.el4.sme smeupdates-testing 13 k
e-smith-samba noarch 1.14.0-30.el4.sme smeupdates-testing 85 k
e-smith-tinydns noarch 1.0.0-7.el4.sme smeupdates-testing 32 k
e-smith-turba noarch 1.7.0-16.el4.sme smeupdates-testing 45 k
horde noarch 3.1.4-1.el4.sme smeupdates-testing 5.1 M
htop i386 0.6.6-1.el4.rf smeupdates-testing 60 k
imp-h3 noarch 4.1.4-1.el4.sme smeupdates-testing 4.0 M
ingo-h3 noarch 1.1.3-2.el4.sme smeupdates-testing 1.3 M
initscripts i386 7.93.29.EL-1.el4.sme smeupdates-testing 1. 1 M
ipsvd i386 0.12.1-1.el4.sme smeupdates-testing 157 k
kmod-appletalk i686 1.0-2.2.6.9_55.EL smeupdates-testing 209 k
kmod-appletalk-smp i686 1.0-2.2.6.9_55.EL smeupdates-testing 220 k
kmod-ppp i686 1.0.2-2.2.6.9_55.EL smeupdates-testing 154 k
kmod-ppp-smp i686 1.0.2-2.2.6.9_55.EL smeupdates-testing 151 k
kmod-slip i686 1.0-2.2.6.9_55.EL smeupdates-testing 77 k
kmod-slip-smp i686 1.0-2.2.6.9_55.EL smeupdates-testing 78 k
maildrop i386 2.0.3-2.el4.at smeupdates-testing 394 k
mailfront i386 1.10-9.el4.sme smeupdates-testing 102 k
mod_auth_external i386 2.2.8-4.el4.sme smeupdates-testing 20 k
mod_auth_tkt i386 2.0.0rc2-1.el4.sme smeupdates-testing 59 k
oidentd i386 2.0.8-1.el4.rf smeupdates-testing 60 k
perl-CGI-FormMagick noarch 0.92-11.el4.sme smeupdates-testing 111 k
perl-CGI-Persistent noarch 0.22-8.el4.sme smeupdates-testing 12 k
perl-Convert-BinHex noarch 1.119-5.el4 smeupdates-testing 47 k
perl-Error noarch 0.17008-1.el4.rf smeupdates-testing 22 k
perl-File-MMagic noarch 1.27-1.el4.rf smeupdates-testing 29 k
perl-HTML-Parser i386 3.55-1.el4.rf smeupdates-testing 140 k
perl-IO-Zlib noarch 1.05-1.el4.rf smeupdates-testing 15 k
perl-IO-stringy noarch 2.110-5.el4 smeupdates-testing 69 k
perl-Locale-gettext i386 1.05-1.el4.rf smeupdates-testing 40 k
perl-Mail-DKIM noarch 0.26-1.el4.rf smeupdates-testing 78 k
perl-Mail-DomainKeys noarch 1.0-1.el4.rf smeupdates-testing 15 k
perl-Mail-SPF-Query noarch 1.999.1-8.el4 smeupdates-testing 43 k
perl-MailTools noarch 1.77-1.el4 smeupdates-testing 89 k
perl-Net-DNS i386 0.59-5.el4 smeupdates-testing 231 k
perl-Net-IPv4Addr noarch 0.10-2.el4 smeupdates-testing 15 k
perl-Net-Server noarch 0.96-1.el4.rf smeupdates-testing 151 k
perl-Text-Template noarch 1.44-4.el4 smeupdates-testing 62 k
perl-TimeDate noarch 1.16-1.2.el4.rf smeupdates-testing 35 k
pptpd i386 1.3.4-1.el4.sme smeupdates-testing 73 k
qpsmtpd noarch 0.32-13.el4.sme smeupdates-testing 141 k
qpsmtpd-plugins noarch 0.0.1-3.el4.sme smeupdates-testing 18 k
razor-agents i386 2.82-17.el4 smeupdates-testing 110 k
runit i386 1.7.2-1.el4.sme smeupdates-testing 93 k
smeserver-clamav noarch 1.2.0-14.el4.sme smeupdates-testing 42 k
smeserver-locale-de noarch 1.2.0-27.el4.sme smeupdates-testing 69 k
smeserver-locale-es noarch 1.2.0-27.el4.sme smeupdates-testing 47 k
smeserver-locale-fr noarch 1.2.0-27.el4.sme smeupdates-testing 64 k
smeserver-locale-it noarch 1.2.0-27.el4.sme smeupdates-testing 64 k
smeserver-qpsmtpd noarch 1.2.1-39.el4.sme smeupdates-testing 94 k
smeserver-release noarch 26:7.2-2.el4.sme smeupdates-testing 14 k
smeserver-spamassassin noarch 1.4.0-13.el4.sme smeupdates-testing 24 k
smeserver-support noarch 1.6.0-38.el4.sme smeupdates-testing 83 k
smeserver-yum noarch 1.2.0-36.el4.sme smeupdates-testing 75 k
spamassassin i386 3.2.1-41.el4 smeupdates-testing 1.0 M
turba-h3 noarch 2.1.4-2.el4.sme smeupdates-testing 1.7 M
ulogd i386 1.24-2.el4.sme smeupdates-testing 135 k
whiptail i386 0.51.5-9.el4.sme smeupdates-testing 20 k
Installing for dependencies:
FuzzyOcr noarch 3.5.1-2.el4.sme smeupdates-testing 36 k
aspell-sv i386 50:0.51-1.2.1.el4.sme smeupdates 1.3 M
dbus-python i386 0.22-12.EL.9 smeupdates-testing 115 k
fontconfig i386 2.2.3-7.centos4 smeos 117 k
gifsicle i386 1.46-1.el4.rf smeupdates-testing 137 k
gocr i386 0.44-1.el4.rf smeupdates-testing 214 k
libungif i386 4.1.3-1.el4.2 smeupdates-testing 39 k
libungif-progs i386 4.1.3-1.el4.2 smeupdates-testing 93 k
mod_perl i386 1.99_16-4.centos4 smeos 1.4 M
netpbm i386 10.25-2.EL4.6 smeupdates-testing 110 k
netpbm-progs i386 10.25-2.EL4.6 smeupdates-testing 1.6 M
ocrad i386 0.16-1.el4.sme smeupdates-testing 150 k
perl-Carp-Assert noarch 0.20-1.el4.rf smeupdates-testing 18 k
perl-Encode-Detect i386 1.00-1.el4.rf smeupdates-testing 158 k
perl-Log-Agent i386 0.305-2.el4.sme smeupdates-testing 169 k
perl-MLDBM noarch 2.01-2.2.el4.rf smeupdates-testing 19 k
perl-MLDBM-Sync noarch 0.30-1.2.el4.rf smeupdates-testing 20 k
perl-Mail-SPF noarch 2.004-1.el4 smeupdates-testing 137 k
perl-Net-IP noarch 1.25-1.el4.rf smeupdates-testing 30 k
perl-NetAddr-IP i386 4.004-1.el4.rf smeupdates-testing 113 k
perl-String-Approx i386 3.26-1.el4 smeupdates-testing 58 k
perl-Tie-Cache noarch 0.17-1.2.el4.rf smeupdates-testing 18 k
perl-Tie-Cache-LRU noarch 0.21-1.2.el4.rf smeupdates-testing 20 k
perl-enum noarch 1.016-1.2.el4.rf smeupdates-testing 13 k
perl-version i386 0.72.3-1.el4.rf smeupdates-testing 77 k
smeserver-locale-sv noarch 1.2.0-27.el4.sme smeupdates-testing 64 k
smolt noarch 0.9.8.1-3.el4.sme smeupdates-testing 138 k
xorg-x11-Mesa-libGL i386 6.8.2-1.EL.18 smeupdates-testing 383 k
xorg-x11-libs i386 6.8.2-1.EL.18 smeupdates-testing 2.7 M
Transaction Summary
=============================================================================
Install 31 Package(s)
Update 93 Package(s)
Remove 0 Package(s)
Total download size: 66 M
Is this ok [y/N]: