Have just finished updating my CentOS 5.4 to 5.5. Very smooth and sans problems. Question:- In /etc/yum.repos.d in addition to the original CentOS-Base.repo and rpmforge.repo there are also those two files but with .rpmnew appended. I believe that those designated rpmnew are only there because the original config files were changed, for example due to having added priorities, which I did. When running sdiff CentOS-Base.repo CentOS-Base.repo.rpmnew | more I see no changes to priorities i.e. seems to be same as original. Can some other CentOS user kindly educate me as to the purpose of the .rpmnew files and also whether my understanding of them as described above is correct ? Thanks.