[CentOS] C6: why i686 are installed on x86_64 based arch?

Hi all,

I noticed that when I install some packages (precise list not defined), my x86_64 C6 tends to install both 32bits and 64bits at the same time:

# yum install fontconfig freetype \ libfreetype.so.6 libfontconfig.so.1 \ libstdc++.so.6

Gives: http://pastebin.com/FNzztefV My repository configuration is same: http://pastebin.com/Hf38sAic No 3rd party repository.

No i686 initially installed: # rpm -aq | grep -Ev '(noarch|x86_64)' gpg-pubkey-c105b9de-4e0fd3a3 #

I dont want that, unless I'ts really mandatory: Is it? One solution would be to append the architecture to the package name to install, but how to make it default, in order to save typing?

Thank you.