I have outdated Mythbuntu and now wondering, what is the best - or least painful way to take a leap over couple releases?
All my media and recordings are on separate physical disk and I want to keep them, as well my settings and recording schedules.

Is it possible just take a backup of the database, install Mythbuntu 12.04 from scratch and restore the database to the brand new Mythbuntu?
Are there any database changes between the releases 0.22 and 0.27 which could prevent this?