A new version (2.0.8-2.centos) for yum has been pushed to the mirrors for testing before going into the main tree. This release only includes a small fix for EM64T machines running the x86_64 version of CentOS 3: the ia32e architecture is now recognized for yum as an compatible architecture name.

The only CentOS ia32e.rpm are the kernel and kernel-unsupported rpms. No one has reported the error on CentOS 3 x86_64.

rpm -Uvh http://mirror.centos.org/centos/centos-3/3/testing/x86_64/RPMS/yum-2.0.8-2.centos.noarch.rpm