Comment 88 for bug 428884

Ok:
$ apt-cache policy gnome-screensaver
gnome-screensaver:
  Instalados: 2.28.0-0ubuntu3.2
  Candidato: 2.28.0-0ubuntu3.2
  Tabla de versión:
 *** 2.28.0-0ubuntu3.2 0
        500 http://archive.ubuntu.com karmic-proposed/main Packages
        100 /var/lib/dpkg/status
     2.28.0-0ubuntu3.1 0
        500 http://archive.ubuntu.com karmic-updates/main Packages
        500 http://archive.ubuntu.com karmic-security/main Packages
     2.28.0-0ubuntu3 0
        500 http://archive.ubuntu.com karmic/main Packages
     2.28.0-0ubuntu2+motumedia1 0
        500 http://ppa.launchpad.net karmic/main Packages

Karmic 32 bit.

Work as expected. Thanks to Chris and Ubuntu people.

Merry Christmas to all!