I successfully upgraded from 10.04 to 10.10, albeit with a bit of a struggle. However, after upgrading to 10.10, I rebooted to find that I had a new option. Windows XP, Ubuntu 10.10 AND Ubuntu 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?