Thanks for your reply. This is on a dedicated server with 20 GB RAM and 1 TB hard drive. Actually, yum worked fine when we fired up the server about a year ago. Haven't installed anything since. Just tried 'yum list extras' and it worked fine but when I tried 'yum update python' it accessed the mirrors and then did a core dump. Then 'yum list extras' accessed the mirrors and then did a core dump. After 'yum clean all', 'yum list extras' worked again but 'yum update python' went back to a core dump.
I reinstalled yum using yum-3.4.3 (the latest version) and had the exact same result - Segmentation fault (core dumped) ${YUM} -y --disablerepo=rpmforge,ius install $@ .
Do you think this is a yum problem and if so, do you have any suggestions?