Hello, using our local mirror, i've faced a problem in yum upgrade. It's look like, there are outdated repodata/primary.xml.gz in 47/*/errata/SL/RPMS/ subtrees. yum clean all yum upgrade complain about ftp://l4u.jinr.ru/pub/SL/4x/x86_64/errata/SL/RPMS/repodata/primary.xml.gz: [Errno -1] Metadata file does not match checksum Trying other mirror. primary.xml.gz 100% |=========================| 2.7 kB 00:00 ftp://ftp.scientificlinux.org/linux/scientific/4x/x86_64/errata/SL/RPMS/repodata/primary.xml.gz: [Errno -1] Metadata file does not match checksum Trying other mirror. Error: failure: repodata/primary.xml.gz from sl-errata: [Errno 256] No more mirrors to try. I've tried to recreate repodata locally and this is solved the problem in our own local mirror. -- Best regards, Valery Mitsyn