Here is /system/gstreamer/0.10 and /apps/rhythmbox I've tried downgrading rhythmbox and it helps. In the latest release the Visualisation plugin was added, this was causing the problem. Disabling the plugin solves the problem. I don't know if it's enabled by default or not. It may be that I've enabled this plugin myself. I recall noticing new position in the Control menu.
** Attachment added: "gconf: gstreamer+rhythmbox" http://librarian.launchpad.net/6383936/gconf-info -- rhythmbox blocks video output https://launchpad.net/bugs/84245 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs