yum install problem.

[Strong]

I say,
$ yum install Newsgroup
and get the following:
Setting up Install Process
Setting up repositories
updates-released          100% |=========================|  951 B
00:00
extras                    100% |=========================| 1.1 kB
00:00
http://ftp.chg.ru/pub/Linux/fedora/core/4/i386/os/repodata/repomd.xml:
[Errno 4] IOError: HTTP Error 404: Date: Tue, 04 Oct 2005 15:16:00 GMT
Server: Apache/1.3.29 (Unix)
Transfer-Encoding: chunked
Content-Type: text/html; charset=iso-8859-1
Trying other mirror.
base                      100% |=========================| 1.1 kB
00:00
Reading repository metadata in from local files
primary.xml.gz            100% |=========================|  24 kB
00:28
http://wftp.tu-chemnitz.de/pub/linux/fedora-core/updates/4/i386/repodata/primary.xml.gz: [Errno 4] Socket Error: timed outTrying other mirror.
primary.xml.gz            100% |=========================|  56 kB
00:33
http://mirrors.tummy.com/mirrors/fedora.redhat.com/fedora/linux/core/updates/4/i386/repodata/primary.xml.gz: [Errno 4] Socket Error: timed out
Trying other mirror.
...
What is it, and how fix?


-- 
Best regards,
Strong.