Hi I wonder if someone could help me out with a yum dependency problem please? I am running Centos 5.5. I installed Boost 1.40 from the Black Op Software repo. I now need to install python-devel, but when I do so I get: ================================================================= $ sudo yum install python-devel Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached hostfile * addons: anorien.csc.warwick.ac.uk * base: anorien.csc.warwick.ac.uk * extras: mirror.as29550.net * updates: anorien.csc.warwick.ac.uk 943 packages excluded due to repository priority protections Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package python-devel.i386 0:2.4.3-27.el5 set to be updated --> Processing Dependency: python = 2.4.3-27.el5 for package: python-devel --> Finished Dependency Resolution python-devel-2.4.3-27.el5.i386 from base has depsolving problems --> Missing Dependency: python = 2.4.3-27.el5 is needed by package python-devel-2.4.3-27.el5.i386 (base) Error: Missing Dependency: python = 2.4.3-27.el5 is needed by package python-devel-2.4.3-27.el5.i386 (base) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest The program package-cleanup is found in the yum-utils package. ================================================================= However, I do have python 2.4 installed: ================================================================= $ sudo yum install python Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached hostfile * addons: anorien.csc.warwick.ac.uk * base: anorien.csc.warwick.ac.uk * extras: mirror.as29550.net * updates: anorien.csc.warwick.ac.uk 943 packages excluded due to repository priority protections Setting up Install Process Package matching python-2.4.3-27.el5.i386 already installed. Checking for update. Nothing to do ================================================================= Finally, this may be useful information: ================================================================= [daldrich@localhost Zodiac]$ yum list python Loaded plugins: fastestmirror, priorities blackop 474/474 943 packages excluded due to repository priority protections Installed Packages python.i386 2.4.3-27.el5_5.3 installed [daldrich@localhost Zodiac]$ ================================================================= So python-devel seems to want python 2.4.3-27.el5 but I have 2.4.3-27.el5_5.3 Any suggestions how I can fix this please? David