Having the same problem here , with random QT movies and totem-gstreamer (not just the browser plugin). I'm using an nVIDIA card, too (with driver version 9629)
-- Full lockup occurs when viewing movies embedded in epiphany https://launchpad.net/bugs/43729 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
