Actually, running firefox-3.0 at the command line revealed that totem was handling the stream and failing dismally. Removing totem and helix player and making sure that mplayer was installed fixed it for me. This is not a bug in FF3, it is in totem or its codecs.
Diagnosis: totem is broken. helix is broken. mplayer works.
Workaround: install mozilla-mplayer. remove totem. remove helix.
Actually, running firefox-3.0 at the command line revealed that totem was handling the stream and failing dismally. Removing totem and helix player and making sure that mplayer was installed fixed it for me. This is not a bug in FF3, it is in totem or its codecs.
Diagnosis: totem is broken. helix is broken. mplayer works.
Workaround: install mozilla-mplayer. remove totem. remove helix.