This link suggests it's to do with youtube's new layout http://www.uluga.ubuntuforums.org/showpost.php?p=10516541&postcount=6
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728778 Title: adobe flash player plugin always crashes on youtube -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
