If your system will not detect new upgrades to ubuntu 10.10, you should edit a file in /etc/update-manager/release-upgrades. follow these steps....
1. open the file "release-upgrades" in /etc/update-manager/ with a suitable editor like gedit,vi or something else... in my case im using gedit
then you will see a line like
you must change it to
2. then save changes..
NOTE: never - Never check for a new release.
normal - Check to see if a new release is available. If more than one new release is found, the release upgrader will attempt to upgrade to the release that immediately succeeds the currently-running release.
lts - Check to see if a new LTS release is available. The upgrader will attempt to upgrade to the first LTS release available after the currently-running one. Note that this option should not be used if the currently-running release is not itself an LTS release, since in that case the upgrader won't be able to determine if a newer release is available.
3. Now try to upgrade
3.1. with the terminal give command :
then your system will check for the upgrades and will ask to do upgrade..
3.2 with GUI open update-manager... you will see a message like " New Ubuntu release '10.10' is available" click on the upgrade button to upgrade...