Friday evening and a nice time to spend on upgrading to Ubuntu Edgy.
replaced all dapper to edgy in /etc/apt/sources.list and ran
sudo apt-get update && sudo apt-get dist-upgrade
I had to run apt-get update couple of times and apg-get dist-upgrade to capture those missing packages which were updated due to connection error.
At first, the apt-get update failed because of multiverse repositories. I commented out the following lines to proceed with the upgrade.
deb http://gb.archive.ubuntu.com/ubuntu/ edgy universe multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ edgy universe multiverse
Once the upgrade is complete, after the reboot, I ran update, upgrade again. I uncommented the above lines and ran update and upgrade again to complete the distribution upgrade to Edgy.