Here is the /etc/yum.conf file I use. I think I was able to install fluxbox 0.14 with it in its current state. If you are not able to do so, uncomment-out the freshrpms site and the dag site, but then comment out the stable and livna sites. I have heard they don't work well together.
# $Id: yum-fd.conf 378 2004-04-30 16:33:52Z dude $
[main]
cachedir=/var/cache/yum
debuglevel=2
logfile=/var/log/yum.log
pkgpolicy=newest
distroverpkg=fedora-release
gpgcheck=1
tolerant=1
exactarch=1
[core]
name=Fedora Linux $releasever - $basearch - core
baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/core
[updates]
name=Fedora Linux $releasever - $basearch - updates
baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/updates
#[freshrpms]
#name=Fedora Linux $releasever - $basearch - freshrpms
#baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/freshrpms
#[tupdates]
#name=Fedora Linux $releasever - $basearch - testing updates
#baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/tupdates
[livna-stable]
name=Livna.org Fedora Compatible Packages (stable)
baseurl=
http://rpm.livna.org/fedora/$releasever/$basearch/yum/stable
#gpgcheck=1
[fedora-stable]
name=Fedora.us Extras (Stable)
baseurl=http://mirrors.kernel.org/fedora.us/fedora/fedora/$releasever/$basearch/RPMS.stable
http://fedora.quicknet.nl/fedora/fedora/$releasever/$basearch/RPMS.stable
http://mirrors.usc.edu/pub/linux/fedora/fedora/fedora/$releasever/$basearch/RPMS.stable
http://fedora.mirror.sdv.fr/fedora/fedora/$releasever/$basearch/RPMS.stable
http://download.fedora.us/fedora/fedora/$releasever/$basearch/RPMS.stable
#gpgcheck=1
[macromedia.mplug.org]
name=macromedia.mplug.org - Flash Plugin
baseurl=http://macromedia.mplug.org/apt/fedora/$releasever
http://sluglug.ucsc.edu/macromedia/apt/fedora/$releasever
http://ruslug.rutgers.edu/macromedia/apt/fedora/$releasever
http://macromedia.rediris.es/apt/fedora/$releasever
#gpgcheck=1
#[dag]
#name=Dag APT Repository
#baseurl=http://dag.freshrpms.net/redhat/fc$releasever/en/$basearch/dag
#
http://ftp.heanet.ie/pub/freshrpms/pub/dag/redhat/fc$releasever/en/$basearch/dag
##gpgcheck=1