result of dpkg -L gnome-screensaver:

/.
/usr
/usr/bin
/usr/bin/gnome-screensaver
/usr/bin/gnome-screensaver-command
/usr/bin/gnome-screensaver-preferences
/usr/lib
/usr/lib/gnome-screensaver
/usr/lib/gnome-screensaver/gnome-screensaver-dialog
/usr/lib/gnome-screensaver/gnome-screensaver-gl-helper
/usr/lib/gnome-screensaver/gnome-screensaver
/usr/lib/gnome-screensaver/gnome-screensaver/floaters
/usr/lib/gnome-screensaver/gnome-screensaver/slideshow
/usr/lib/pkgconfig
/usr/lib/pkgconfig/gnome-screensaver.pc
/usr/share
/usr/share/applications
/usr/share/applications/screensavers
/usr/share/applications/screensavers/cosmos-slideshow.desktop
/usr/share/applications/screensavers/footlogo-floaters.desktop
/usr/share/applications/screensavers/personal-slideshow.desktop
/usr/share/applications/screensavers/ubuntu_theme.desktop
/usr/share/applications/gnome-screensaver-preferences.desktop
/usr/share/pixmaps
/usr/share/pixmaps/backgrounds
/usr/share/pixmaps/backgrounds/cosmos
/usr/share/pixmaps/backgrounds/cosmos/cloud.jpg
/usr/share/pixmaps/backgrounds/cosmos/comet.jpg
/usr/share/pixmaps/backgrounds/cosmos/earth-horizon.jpg
/usr/share/pixmaps/backgrounds/cosmos/earthrise.jpg
/usr/share/pixmaps/backgrounds/cosmos/galaxy-ngc3370.jpg
/usr/share/pixmaps/backgrounds/cosmos/helix-nebula.jpg
/usr/share/pixmaps/backgrounds/cosmos/jupiter.jpg
/usr/share/pixmaps/backgrounds/cosmos/sombrero.jpg
/usr/share/pixmaps/backgrounds/cosmos/whirlpool.jpg
/usr/share/pixmaps/gnome-logo-white.svg
/usr/share/pixmaps/ubuntu.svg
/usr/share/desktop-directories
/usr/share/desktop-directories/gnome-screensaver.directory
/usr/share/gnome-screensaver
/usr/share/gnome-screensaver/gnome-screensaver-preferences.glade
/usr/share/gnome-screensaver/lock-dialog-default.glade
/usr/share/gconf
/usr/share/gconf/defaults
/usr/share/gconf/defaults/10_gnome-screensaver
/usr/share/gconf/schemas
/usr/share/gconf/schemas/gnome-screensaver.schemas
/usr/share/doc
/usr/share/doc/gnome-screensaver
/usr/share/doc/gnome-screensaver/README
/usr/share/doc/gnome-screensaver/TODO
/usr/share/doc/gnome-screensaver/AUTHORS
/usr/share/doc/gnome-screensaver/copyright
/usr/share/doc/gnome-screensaver/changelog.gz
/usr/share/doc/gnome-screensaver/NEWS.gz
/usr/share/doc/gnome-screensaver/changelog.Debian.gz
/etc
/etc/xdg
/etc/xdg/menus
/etc/xdg/menus/gnome-screensavers.menu
/etc/pam.d
/etc/pam.d/gnome-screensaver