diff --git a/app/views/auth_sources/list.rhtml b/app/views/auth_sources/list.rhtml
index 6836e6c6..5729ec77 100644
--- a/app/views/auth_sources/list.rhtml
+++ b/app/views/auth_sources/list.rhtml
@@ -9,6 +9,7 @@
 	  <th><%=l(:field_name)%></th>
 	  <th><%=l(:field_type)%></th>
 	  <th><%=l(:field_host)%></th>
+	  <th><%=l(:label_user_plural)%></th>
 	  <th></th>
 	  <th></th>
   </tr></thead>
@@ -18,8 +19,12 @@
     <td><%= link_to source.name, :action => 'edit', :id => source%></td>
     <td align="center"><%= source.auth_method_name %></td>
     <td align="center"><%= source.host %></td>    
+    <td align="center"><%= source.users.count %></td>
     <td align="center"><%= link_to l(:button_test), :action => 'test_connection', :id => source %></td>
-    <td align="center"><%= button_to l(:button_delete), { :action => 'destroy', :id => source }, :confirm => l(:text_are_you_sure), :class => "button-small" %></td>
+    <td align="center"><%= button_to l(:button_delete), { :action => 'destroy', :id => source },
+                                                        :confirm => l(:text_are_you_sure),
+                                                        :class => "button-small",
+                                                        :disabled => source.users.any? %></td>
   </tr>
 <% end %>
   </tbody>