Ignorance and callousness are not virtues
I don't really know what this is, but you should make sure that you don't have both the ac3 filter and perian installed.
One guy, a while ago, needed to uninstall and reinstall perian multiple times before his problems went away.
That's about all I got right now...sorry.
Oh! make sure you don't have the vlc plugin installed and active in firefox.
A bleeding heart is a symbol of holiness, a symbol of compassion, not an epithet
When our discourse sinks to the level of meaningless, pejorative labels and personal name-calling rather than honest reflection and reasoned dialogue, we are no longer a people, but a mob