I'm trying to upgrade Ubuntu 13.04 from 12.04 (which I upgraded from Ubuntu 11.04). The problem is that when I'm running the installer, it displays "version 11.04" (the other problem is that it crashed 3/4 of the way into the installation, but never mind).
I checked 3 times, my install image is named "ubuntu-13.04-desktop-amd64.iso" .
Is this just a bug of version 13.04? Can it be a cache bug? (because I have noticed that Ubuntu installer cache also my language and wifi password)