I don't believe this is a bug in GNOME Screensaver, rather XFWM. There was some compiz activity that was similar causing a security update to Gutsy quickly after it's release. It might be a similar bug, though I'm unfamiliar with it.
** Changed in: gnome-screensaver (Ubuntu) Status: Confirmed => Invalid -- gnome-screensaver doesn't blank screen on lock with xfwm4 compositing https://bugs.launchpad.net/bugs/191503 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs