I've generated a list of pkgs which exist in both epel(x86_64 and/or
i386) and any of the non-debuginfo/non-beta/non-fasttrack rhel channels.
http://skvidal.fedorapeople.org/misc/epel-clashes/
I generated this list by making a dump of name.arch of each pkg
per-repo.
Then I went through each repo and compared them against epel using:
cat epel-i386 $repo-i386 | sort | uniq -d
To dump out the list of any duplicates.
-sv