Fedora has become fat!

[Christoph Wickert]

Why has Fedora become so fat in the F13 development cycle?

      * The LXDE Spin has grown from 464 MB to 509 MB [1] without a
        single change in the Spin. There actually was a change, SLIM was
        replaced with LXDM, but LXDM is actually smaller because it
        doesn't require the desktop-brackgrounds package
      * The Xfce spin has grown from 697 MB to 744 MB [2] without major
        changes. In fact, we dropped totem and gftp, which is at least
        10 MB.

Any ideas what made Fedora become so fat or how to further investigate
this?

Regards,
Christoph
[1]
http://alt.fedoraproject.org/pub/alt/nightly-composes/lxde/logs/SIZEHISTORY-i386
[2]
http://alt.fedoraproject.org/pub/alt/nightly-composes/xfce/logs/SIZEHISTORY-i386