The following packages are in EPEL-6 and replace RHEL-6 packages. They will need to be dealt with 


 ibus-table-chinese-cangjie
     replacing  ibus-table-cangjie.noarch 1.2.0.20100210-1.el6
 ibus-table-chinese-erbi
     replacing  ibus-table-erbi.noarch 1.2.0.20090901-8.el6
 ibus-table-chinese-scj
     replacing  ibus-table-cangjie.noarch 1.2.0.20100210-1.el6
 ibus-table-chinese-wubi-haifeng
     replacing  ibus-table-wubi.noarch 1.2.0.20090715-8.el6
 ibus-table-chinese-wubi-jidian
     replacing  ibus-table-wubi.noarch 1.2.0.20090715-8.el6
 perl-DateTime-Format-DateParse
 perl-Locale-Maketext-Gettext
 perl-Parse-RecDescent
 python-tw-forms

I am guessing the ibus items need a 'conflicts' or something in them. The perl and python packages will need a removal and packages depending on them rebuilt.

--
Stephen J Smoogen.