Upgrade from 9.04 to 10.10. How?

Use the Update Manager.
Peter

It cannot do this. It says system is up to date.

I have an Acer netbook that has preinstalled Ubuntu 9.04 version. How can i upgarde to the latest 10.10 version? Through the update manager I cannot do it thus it says that the system is up-to-date whenever I "check" it. It can only update some of the installed software. It doesn't upgrade. It seems that it has not upgraded in the first time so it has stopped doing it. I cannot do it by CDrom as it hasn't got one.

I have an Acer netbook that has preinstalled Ubuntu 9.04 version. How can i upgarde to the latest 10.10 version? Through the update manager I cannot do it thus it says that the system is up-to-date whenever I "check" it. It can only update some of the installed software. It doesn't upgrade. It seems that it has not upgraded in the first time so it has stopped doing it. I cannot do it by CDrom as it hasn't got one.

When you open Update-Manager from a version of Ubunti other that 8.04.1 or 10.04.1, you should see at top a button proposing you to upgrade to following release.
For 8.04.1 or 10.04.1, you have to go to Preferences and remove option "Update only to LTS version".

Well this is my problem. In my PC there is no upgrade button. What can I do?

See these two links:

https://help.ubuntu.com/community/UpgradeNotes
https://help.ubuntu.com/community/KarmicUpgrades#Network%20Upgrade%20for%20Ubuntu%20Servers%20%28Recommended%29

After searching a little with the links you send me I found out that there is installed a package of eubuntu 1.70. That seems to be the problem, isn't it?

I finally made it. The solution was under the EOL upgrades pages as the Jaunty distribution was expired of upgrades.