Akemi Yagi wrote on 01/10/2011 04:15 PM:
...
> Either remove or disable centos-related repos that you do not need any more.

The CentOS repo definitions should have gotten a .rpmsave extension 
during the removal process, effectively disabling them.

To be REALLY sure of a full conversion one might try:

yum reinstall $(rpm -qa --qf "%{name}.%{arch} %{vendor} \n" | \
  grep -i centos | cut -d ' ' -f 1 | sort | uniq | grep -v kernel)

Need special handling for kernel and kernel-devel as you will get 
messages about multiple versions being allowed, and cutting off the limb 
on which you are standing is not recommended.

Phil