diff -ru yum-3.4.3-orig/rpmUtils/arch.py yum-3.4.3/rpmUtils/arch.py
--- yum-3.4.3-orig/rpmUtils/arch.py	2011-06-28 17:01:10.009680846 -0400
+++ yum-3.4.3/rpmUtils/arch.py	2011-06-28 17:01:31.849916539 -0400
@@ -3,7 +3,7 @@
 import ctypes
 import struct
 
-_ppc64_native_is_best = False
+_ppc64_native_is_best = True
 
 # dict mapping arch -> ( multicompat, best personality, biarch personality )
 multilibArches = { "x86_64":  ( "athlon", "x86_64", "athlon" ),
Only in yum-3.4.3/rpmUtils: arch.py~