YUM help

[John Aldrich]

I want to make sure my yum.conf file is correct... it seems strange to me that 
I should be getting a URL of 
www.gtlib.cc.gatech.edu/pub/fedoralegacy/redhat/Null/os/i386/headers
The "Null" is the part that's throwing me... it appears that the mirrors are 
not synced yet... all I'm getting is "404" errors...

Here's my /etc/yum.conf...
Thanks...

[main]
cachedir=/var/cache/yum
debuglevel=2
logfile=/var/log/yum.log
pkgpolicy=newest
distroverpkg=fedora-release
tolerant=1
exactarch=1
retries=20

[base]
name=Fedora Core $releasever - $basearch - Base
baseurl=http://fedora.redhat.com/releases/fedora-core-$releasever
baseurl=http://download.fedoralegacy.org/redhat/$releasever/os/$basearch
baseurl=ftp://mirror.physics.ncsu.edu/mirror/download.fedoralegacy.org/redhat/$releasever/os/$basearch
baseurl=http://www.gtlib.cc.gatech.edu/pub/fedoralegacy/redhat/$releasever/os/$basearch 

[updates-released]
name=Fedora Core $releasever - $basearch - Released Updates
baseurl=http://fedora.redhat.com/updates/released/fedora-core-$releasever

#[updates-testing]
#name=Fedora Core $releasever - $basearch - Unreleased Updates
#baseurl=http://fedora.redhat.com/updates/testing/fedora-core-$releasever

#[development]
#name=Fedora Core $releasever - Development Tree
#baseurl=http://download.fedora.redhat.com/pub/fedora/linux/core/development/$basearch/

[updates]
name=Red Hat Linux $releasever updates
baseurl=http://download.fedoralegacy.org/redhat/$releasever/updates/$basearch
baseurl=ftp://mirror.physics.ncsu.edu/mirror/download.fedoralegacy.org/redhat/$releasever/updates/$basearch
baseurl=http://www.gtlib.cc.gatech.edu/pub/fedoralegacy/redhat/$releasever/updates/$basearch

[legacy-utils]
name=Fedora Legacy utilities for Red Hat Linux $releasever
baseurl=http://download.fedoralegacy.org/redhat/$releasever/legacy-utils/$basearch
baseurl=ftp://mirror.physics.ncsu.edu/mirror/download.fedoralegacy.org/redhat/$releasever/legacy-utils/$basearch
baseurl=http://www.gtlib.cc.gatech.edu/pub/fedoralegacy/redhat/$releasever/legacy-utils/$basearch