LinuxQuestions.org - Can't install/update the packages on newly installed CentOS6

I installed CentOS6 and it is the first time that I use CentOS. I tried to install/update packages. Here is the output when I try to run

Code:

yum update

Code:

[root@localhost suranga]# yum update

Loaded plugins: fastestmirror, refresh-packagekit

Loading mirror speeds from cached hostfile

 * base: mirror.nus.edu.sg

 * extras: mirror.nus.edu.sg

 * updates: mirror.nus.edu.sg

base                                                    | 3.7 kB    00:00    

http://mirror.nus.edu.sg/centos/6.0/os/i386/repodata/2b014e1fcde80ec1cc69d6a048f260f712b1ae2d83d1fc04d3b3c00ade817ec9-primary.sqlite.bz2: [Errno 12] Timeout on http://mirror.nus.edu.sg/centos/6.0/os/i386/repodata/2b014e1fcde80ec1cc69d6a048f260f712b1ae2d83d1fc04d3b3c00ade817ec9-primary.sqlite.bz2: (28, '')

Trying other mirror.

http://centosmirror.go4hosting.in/centos/6.0/os/i386/repodata/2b014e1fcde80ec1cc69d6a048f260f712b1ae2d83d1fc04d3b3c00ade817ec9-primary.sqlite.bz2: [Errno 12] Timeout on http://centosmirror.go4hosting.in/centos/6.0/os/i386/repodata/2b014e1fcde80ec1cc69d6a048f260f712b1ae2d83d1fc04d3b3c00ade817ec9-primary.sqlite.bz2: (28, '')

Trying other mirror.

This won't stop.

I tried these things. But no results

1.

Code:

yum clean all

2.edit

Code:

/etc/repos.d

comment

Code:

mirrors

and uncomment

Code:

baseurl

3.edit

Code:

edit /etc/resolve.conf

nameserver into 8.8.8.8

Code:

cd /var/lib/rpm

rm -f __db*

rpmdb -v --rebuilddb

5.edit

Code:

/etc/yum.conf

timeout=300

6. stop the

Code:

ip6tables

I tried lot of things more than these.
But still I have the same problem.

When I start the OS, it always changes the

Code:

/etc/resolve.conf

and adds

Code:

nameserver 10.16.32.1

(10.16.32.1 is my router) and there may be some things that I don't know.

And Internet works fine.
Please help me to get rid of this.

Thank You!