I wouldn't pin it down on temporal filters just yet. I have had similar results to these straight from a raw capture. The only explanation I had was the settings used on my capture program, though the specifics elude me at the moment. I have a few raw capture files on my HD, all done the same day, that have this same ghosting effect.
It's hard to say what the real cause of this is. There's only one person who knows for sure...