Upgrade warning remains after upgrade

i’ve just upgraded my wp install from 2.65 to 2.7 with the quto upgrade plugin, yet it keep on “remainding me” to upgrade.

im certain that the upgrade went through, i’ve run again the upgrade.php and t sais is up to date.

if i’m not wrong i think i might be just a file replace, the one that tels the back end witch version is installed.

Thanks for your help.