[ubuntu] Unable to upgrade 13.04 Ubuntu desktop (Something wicked happened...) topic

Hi all,

I have seen several posts on this problem where people said they are not able to upgrade/update EOL (end of life) version, however i did not see anything specific to my version 13.04.Also none of the other version solutions i saw helped me! :(

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=13.04
DISTRIB_CODENAME=raring
DISTRIB_DESCRIPTION="Ubuntu 13.04"

On running "sudo apt-get update"
or
"sudo apt-get upgrade"
or
"sudo apt-get dist-upgrade"

I always get Something wicked happened resolving 'us.old-releases.ubuntu.com:http' (-11 - System error)
Since 13.04 is no longer supported, i have updated the paths in sources.list file with following command:
sudo sed -i -e 's/archive.ubuntu.com\|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
but still no success! :(

I also tried removing the locks with both of the below cmds:
sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock

also restarted my machine several times...

I keep on getting above System error messages, and sudo apt-get update always gets stuck at
59% [Connecting to us.old-releases.ubuntu.com] for more than 1hr and then it timeouts! I get some internet problem error, however fact is that i have a very good internet connection. I tried all these the whole day but in vain :(

Note that my Ubuntu had IPv6 enabled. However after all the trial failures i disabled it
$ cat /proc/sys/net/ipv6/conf/all/disable_ipv6
1

However after that too, same problem persists!:(

Can someone please suggest what to do to come to latest supported version of Ubuntu?