[Bug 70850] [users-admin] show all users checkbox is gone and there is no way to view users with a UID of less than 1000

[Mikele]

Public bug reported:

The user-admin dialog in Edgy doesn't show the 
"show all users" checkbox anymore, and only the users with UID > 1000 are shown.
I can see how this may be regarded as a "feature", simplifying the interface, but in some cases may be quite annoying. 

* test-case (my case): I'm adding a PC to a network with NFS shares; some users over the network have UIDs < 1000, and I need these UIDs to be preserved for NFS to work properly. When I change the pre-defined UIDs, those users are not listed anymore, and I have to edit their properties via console.
* test-case 2: I'm just curious, or want to have a look to the complete list of users in a graphical fashion. users-admin was a good tool for that, when it was able to show all users.

**WORKAROUND: 
sudo vi /etc/login.defs
change UID_MIN to 1

this is not very clean, but I guess that if one needs to change
automatically generated user-ids, he should also be able to take care
not to assign "reserved" userids to normal users.

** Affects: gnome-system-tools (Ubuntu)
     Importance: Medium
     Assignee: Ubuntu Desktop Bugs
         Status: Confirmed

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[users-admin] show all users checkbox is gone and there is no way to view users with a UID of less than 1000
https://launchpad.net/bugs/70850