[CentOS] py-yaml complaints from yum

Sun Jan 30 13:31:18 UTC 2011
Kai Schaetzl <maillists at conactive.com>

It's not a good idea to have all these repo's enabled at the same time and 
without protectbase or priorities. There's likely a conflict because of 
this. And it makes debugging now more complex. Try yum clean metadata and 
if that doesn't help try running with a higher debug level. Maybe an 
update wants to replace that package, somehow breaking the dependency.
Also, remove that i386 version.