Having the same problem in Xubuntu 8.04 release.
Xubuntu uses gnome-screensaver by default but it is not autostarted. This leads to Bug #200665: https://bugs.launchpad.net/ubuntu/+source/xfce-mcs-plugins/+bug/200665
Having the same problem in Xubuntu 8.04 release.
Xubuntu uses gnome-screensaver by default but it is not autostarted. This leads to Bug #200665: https:/ /bugs.launchpad .net/ubuntu/ +source/ xfce-mcs- plugins/ +bug/200665