Comment 4 for bug 278617

This can result from a user action using Nautilus:

- right-click a folder
- select "Sharing options"
- check "Share this folder"
- click "Create Share"
- wait for Samba will be downloaded an installed.

I then ended up uninstalling it because I found a better way to share the directory, but found after that I could not login or use `sudo'.

Running an strace on `login' when trying to debug this showed that the samba password file was being accessed shortly before the segfault, so it seems that the presence/non-presence of this file may have been the cause of the problem.

Note that this might be quite serious as any user that decides to share a folder might be affected, and they will likely not know how to fix it as it breaks sudo.