Duplicated packages on x86_64

[Mauricio Teixeira (netmask)]

Hi!

I'm new to Fedora, and I'm using FC6 on a x86_64 desktop. Something that
I find really strange is the fact that I have a lot of duplicated
packages for both x86_64 and i386 archs.

By my counting I have about 173 packages that have both the i386 and
x86_64 versions installed.

A while ago I tried to install 'subversion' using Yum, and said it would
install both arches. Then I tried the same install with Smart, and it
said it would install the x86_64 version only.

How can I make this behavior stop for Yum?

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