I've been Googling on this all day, installing GPG Keys, and trying different yum configurations. I noticed a similar question in the list a couple of months ago about going from RHEL to Centos-3, but the answer wasn't definitive. Has anyone done this? Can this be done? Can it be done with yum? If so, how? When I 'yum update' I get /usr/bin/yum, yummain.main, yummain.py, clientStuff.py errors, and a "ValueError: unpack list of wrong size" error. Would definitely appreciate any direction. Thanks, JAB*