CentOS - Oct 2015 - Metadata checksum

Hi All

I am successfully spin the VM with Centos 6.2 ISO. When i am trying to
download the packages we are facing the issues. The error message copy
paste below,

*[root at localhost ~]# yum install ntp*
*Loaded plugins: fastestmirror, refresh-packagekit, security*
*Loading mirror speeds from cached hostfile*
* * base: centos.excellmedia.net <http://centos.excellmedia.net>*
* * extras: centos.excellmedia.net <http://centos.excellmedia.net>*
* * updates: centos.excellmedia.net <http://centos.excellmedia.net>*
*base
                                                                      | 3.7
kB     00:00*
*base/primary_db
                                                                       |
4.6 MB     00:01*
*http://centos.excellmedia.net/6.7/os/x86_64/repodata/11bcf3233241e37e1a0e04d2fde8a609215059b5b0319fd660f796d462bbe6a8-primary.sqlite.bz2
<http://centos.excellmedia.net/6.7/os/x86_64/repodata/11bcf3233241e37e1a0e04d2fde8a609215059b5b0319fd660f796d462bbe6a8-primary.sqlite.bz2>:
[Errno -1] Metadata file does not match checksum*
*Trying other mirror.*


  These are the commands run but noluck.

1. yum clean all
2. yum clean metadata
3. rpm --rebuilddb

*Note: Not only Centos 6.2 iso, We are trying to 6.5 iso also but no luck.*

Please guys help me.

Regards,
Venkatesh.k