[CentOS] yum-plugin-priorities

If I add
  priority=1
to [updates] in CentOS-Base.repo
when I run "sudo yum update" I get the warning
  66 packages excluded due to repository priority protections

This does not seem to have any adverse effect,
but what exactly does it mean?


-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
School of Mathematics, Trinity College, Dublin 2, Ireland