Rode pelo terminal, veja se aparece alguma mensagem de erro.
#nanny-admin-console/usr/lib/python2.7/dist-packages/nanny/client/common/Utils.py:33: GtkWarning: GtkSpinButton: setting an adjustment with non-zero page size is deprecated
object.xml.add_from_file (main_ui_filename)
/usr/lib/python2.7/dist-packages/nanny/client/common/Utils.py:54: FutureWarning: This search is broken in 1.3 and earlier, and will be fixed in a future version. If you rely on the current behaviour, change it to './/object'
for obj in xml.findall ('//object'):
uid: 1000, name:
Usuário1, user_name:
LoginDoUsuário1uid: 1001, name:
Usuário2, user_name:
LoginDoUsuário2O Terceiro usuário nem apareceu ai...