Fear Factory: Don't recall
Dillinger Escape Plan: Progressive (I think, I might have confused them with some other band... there are so many up and coming american bands now)
Nevermore: Progressive
Life of Agony: No idea
Symphony X: Power/Prog (great band)
Dry Kill Logic & Bobaflex: Sounds like crap and probably is too.

As for me I was at the swedish Metaltown festival today and saw 5 bands - Tiamat, Dark Tranquillity, Sentenced, Apocalyptica and Rammstein.
Suffice to say, I had the time of my life.