Possible Duplicate:
I installed an alpha or beta, am I up to date with the final release if I keep upgrading?
How do I upgrade from 10.04 or 11.10 to 12.04?
Help!Please I why not,I go to the update Center and I find not.
Possible Duplicate:
I installed an alpha or beta, am I up to date with the final release if I keep upgrading?
How do I upgrade from 10.04 or 11.10 to 12.04?
Help!Please I why not,I go to the update Center and I find not.