Comment 9 for bug 201059

The issue here is that samba-common has been converted to use ucf for smb.conf management, and this requires a baseline config file to use when first enabling ucf. Templates have been provided for the gutsy and dapper versions of smb.conf, but there have been changes to the smb.conf since gutsy's release which will show up as diffs if you're using an smb.conf that was created from a more recent install of samba.

On the other hand, some bits of the diff (attached) relative to the stock gutsy smb.conf suggest that you might have originally installed a *pre* gutsy version of Samba? Yes, this seems to match the feisty version of the smb.conf file. Unfortunately, while I've tried to provide for the upgrade paths from each of dapper and gutsy, I don't know of a good way to detect that the smb.conf was originally created by an older version of samba than the one being upgraded from.