Ubuntu upgrade problem

[lance2121]

I've been having problem trying to update to the latest Ubuntu distribution 13.04 as the update-manager says that there is "no new release available".  I've tried to download the upgrade few time before but due to some problems i couldn't upgrade completely and yesterday ubuntu advised for me to do a partial upgrade. After that the software update can't seem to recognize the available distro upgrade.

I'm on Ubuntu 12.10 at the moment.  I tried sudo apt-get update && sudo apt-get upgrade and they run without errors.

Help

[Admin]

Try to delete this file and then try to upgrade

sudo rm /var/lib/ubuntu-release-upgrader/release-upgrade-available

then try

sudo apt-get update && sudo apt-get upgrade

OR

sudo do-release-upgrade

should work.

[lance2121]

Wow it worked.

the later sudo apt-get update && sudo apt-get upgrade didn't but

sudo do-release-upgrade did

Thanks