--- a/MozillaFirefox/MozillaFirefox.spec	Wed Dec 15 08:51:12 2010 +0100
+++ b/MozillaFirefox/MozillaFirefox.spec	Mon Jan 03 17:57:59 2011 +0100
@@ -211,6 +211,11 @@
 ac_add_options --enable-official-branding
 EOF
 %endif
+%ifarch ppc ppc64 s390 s390x
+cat << EOF >> $MOZCONFIG
+ac_add_options --disable-ipc
+EOF
+%endif
 make -f client.mk build
 
 %install