I made this patch specifically for Ubuntu users to backup all files that FOG needs to run. You still need to install FOG first, but then you can move the files back after you install FOG. I was working on a restore file but have been side tracked with work.
Of course it should be automatic, but you should atleast be able to configure it and set when you want the backups to be shedualed etc
I run the fog backup script manually to a windows share atm