I had Ubuntu 11.04 32-bit installed with 5 users. Home folder has its own partition. I was planning to install Ubuntu 12.04 64-bit so I booted from the live CD and was going to manually select partitions. This was going to remove all installed packages but would have kept all user files and settings.
I saw a new option for installation that said Upgrade to 12.04 while keeping all files and most packages. But after installation none of the packages were there, also all user folders under home were empty. The folders were there, but all files were gone. Only default empty folders for each user were there.
I don't care much for packages, all I want is to get the files that were under each user home folder back!