[Yum] errors on update or install with yum

[Dan McCullough]

I have been google'ing this issue since yesterday when I discovered
it.  When I try to use yum i get an error when trying to pull down
extras.

yum update
Setting up Update Process
Setting up repositories
updates-released          100% |=========================|  951 B    00:00
extras                    100% |=========================| 1.1 kB    00:00
base                      100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
http://download.fedora.redhat.com/pub/fedora/linux/extras/4/i386/repodata/primary.xml.gz:
[Errno 4] IOError: HTTP Error 400: Server: Squid/2.4.STABLE7
Mime-Version: 1.0
Date: Fri, 13 Jan 2006 17:43:32 GMT
Content-Type: text/html
Content-Length: 1015
Expires: Fri, 13 Jan 2006 17:43:32 GMT
X-Squid-Error: ERR_INVALID_REQ 0
X-Cache: MISS from MY-HOST
Proxy-Connection: close
Trying other mirror.
Error: failure: repodata/primary.xml.gz from extras: [Errno 256] No
more mirrors to try.

I know there is some proxy issues with yum, however I have been using
wget for 1 year on the same box and fixed the proxy issue by
specifying the http_proxy in my profile, also I have access to the
proxy and firewall at work, and I have implemented a rule where the
server doesnt go through the proxy server, however with yum while some
seem to download I have a problem with this one in particular.  Any
thoughts?