Hi, With the release of 5.2 "yum update" seems to be upgrading our computers from CentOS 5.1 to CentOS 5.2. I note from release notes for 5.2 that you are only supposed to get 5.2 if you type in "yum upgrade". On two seperate machines entering "yum update" has resulted in yum geting repo information for packages with versions that only exist in the base repository of centos 5.2. The following snippet shows the beginning of yum update on a x86_64 server. It has noticed python-2.4.3-21.el5.x86_64, ltrace-0.5-7.45svn.el5.x86_64 and system-config-securitylevel-tui.x86_64 0:1.6.29.1-2.1.el5 which are a CentOs 5.2 package. On a workstation yum update resulted in upgrade of firefox from 1.5 to 3.0-0 beta5. Can I stop this from happening? Ideally I would like to stay on a particulare version of CentOS eg 5.2 until we can do a controlled upgrade. Maybe we have the same problem as having stable specified in a debian sources.list where what is meant by stable changes when a new version of debian is released. [root at huxley-ci yum.repos.d]# yum update Loading "installonlyn" plugin Loading "dellsysidplugin" plugin Setting up Update Process Setting up repositories epel 100% |=========================| 1.1 kB 00:00 dell-hardware-auto 100% |=========================| 951 B 00:00 extras 100% |=========================| 1.1 kB 00:00 updates 100% |=========================| 951 B 00:00 base 100% |=========================| 1.1 kB 00:00 addons 100% |=========================| 951 B 00:00 dell-hardware-main 100% |=========================| 951 B 00:00 Reading repository metadata in from local files primary.xml.gz 100% |=========================| 1.0 MB 00:05 ################################################## 3431/3431 primary.xml.gz 100% |=========================| 86 kB 00:00 ################################################## 235/235 primary.xml.gz 100% |=========================| 88 kB 00:01 ################################################## 183/183 Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Downloading header for nspr to pack into transaction set. nspr-4.7.0.99.2-1.el5.x86 100% |=========================| 5.5 kB 00:00 ---> Package nspr.x86_64 0:4.7.0.99.2-1.el5 set to be updated ---> Downloading header for python to pack into transaction set. python-2.4.3-21.el5.x86_6 100% |=========================| 225 kB 00:01 ---> Package python.x86_64 0:2.4.3-21.el5 set to be updated ---> Downloading header for pam to pack into transaction set. pam-0.99.6.2-3.27.el5.i38 100% |=========================| 84 kB 00:00 ---> Package pam.i386 0:0.99.6.2-3.27.el5 set to be updated ---> Downloading header for ltrace to pack into transaction set. ltrace-0.5-7.45svn.el5.x8 100% |=========================| 8.1 kB 00:00 ---> Package ltrace.x86_64 0:0.5-7.45svn.el5 set to be updated ---> Downloading header for system-config-securitylevel-tui to pack into transaction set. system-config-securitylev 100% |=========================| 29 kB 00:00 ---> Package system-config-securitylevel-tui.x86_64 0:1.6.29.1-2.1.el5 set to be updated