The software updater in my Ubuntu 13.04 64bit system has already notified me of the latest distro release, but when I tell it I want to upgrade, it goes to the upgrade start and prompts me to upgrade or cancel (at the good old notification screen, reminding me of all the things I should read).
So I successfully upgraded from 10.04 to 10.10, albeit with a bit of a struggle.
However, after upgrading to 10.10, I rebooted from the HD to find that I had a new option. Xp, Ubuntu 10.10 AND ubunto 10.04. I was wondering why the new upgrade didn't overwrite the original 10.04 install. I have yet to boot from the 10.04 again. Is this common?
My upgrade manager prompted me for an upgrade to 12.10 from 12.04. So, clicked on upgrade. It has been 4+ hours now and the system is still trying to upgrade. The progress bar is still at around 10%. So, it may take more than 24 hours to upgrade. This compared to a clean build which might have taken less than an hour.