up2date and up2date-gnome shipped with a non-error producing typo in the /etc/sysconfig/rhn/sources file. (see https://bugzilla.caosity.org/show_bug.cgi?id=836 ) This has been corrected with these packages: up2date-4.4.5-1.centos4.4.i386.rpm up2date-gnome-4.4.5-1.centos4.4.i386.rpm Use this command to get the update: yum update -- Johnny Hughes