At this juncture, we really cannot rule out terrorism can we? We don't know where all the cells are and how do we know they don't work for the railroad? They might not be arabs after all or maybe they changed their names, etc.
The news seems to be drying up already on this disaster maybe on purpose. The NTSB always puts a lid on stuff.
Now Fox News Channel said the engineer thought the tracks were misaligned. That's why he put on the brakes. How'd that happen? Any railroad experts here?
Several years ago I seem to remember that someone was sabotaging the tracks in Britian. There were several accidents. I thought from the beginning that this MIGHT have been a terrorist incident. Remember, their strength is that they strike where we are not prepared. Especially in Florida I am suspicious, FL seems to be a good place for terrorist cells to operate, we have such a high transcient rate here.
That said, if this WAS a terrorist incident, I would think they would have claimed responsibility by now. Terrorism is only "fun" when you let your victims know it was you.