Comment 13 for bug 115167

I also get this dialog, Xscreensaver daemon doesn't seem to be running on display ":0.0" Launch it now?

Also 3-4 screensavers seem to be not installed, although the -data, -data-extra -gl and -gl-extra packages are installed.

Another interesting note, gnome-screensaver is installed, which the description says if installed, then this package is not needed. I'm sorry this is going like a Q&A rather than the simple bug which I did before.