I can't get yum perform a "yum update yum" but the rpm itself is ok, since I can rpm -Fvh yum-1.0-1_80.noarch.rpm without error... # yum update Gathering package information from servers Getting headers from: YUM Getting headers from: Red Hat Linux 8.0 updates Finding updated packages Downloading needed headers Resolving dependencies Dependencies resolved I will do the following: [update: openssl.i686] [update: file.i386] [update: yum.noarch] Is this ok [y/N]: y Getting openssl-0.9.6b-31.i686.rpm Getting file-3.39-9.i386.rpm Getting yum-1.0-1_80.noarch.rpm Error: MD5 Signature check failed for /var/cache/yum/self/packages/yum-1.0-1_80.noarch.rpm You may want to run yum clean or remove the file: /var/cache/yum/self/packages/yum-1.0-1_80.noarch.rpm Exiting. # cat /etc/yum.conf [main] cachedir=/var/cache/yum debuglevel=2 logfile=/var/log/yum.log pkgpolicy=newest exclude=kernel* [updates] name=Red Hat Linux 8.0 updates baseurl=http://bingo.sissa.it/rh80-update/ [self] name=YUM baseurl=http://bingo.sissa.it/yum/ am I missing something? Piero