I have retested it and now is quite different: sometimes everything is black with no output (with no network activity) some other times the error message is
Totem could not play 'mmsh://live.mediaserver.kataweb.it/retea?MSWMExt=.asf'. Could not open location; You may not have permission to open the file. the other error is no more present -- totem-gstreamer-firefox-plugin gives an error in a page https://launchpad.net/bugs/46217 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
