A few friends of mine told me that they've been in big reliefs after playing Dragon Age 2: Mark of the Assassin while not having to suffer any glitches at all. These are like 15 guys and they each played the DLC while apparently not having to suffer floating dead bodies, levitated Hawkes or fighting through walls. Could this actually be true? Or is it just the good condition of their systems and the game? Well this requires more studying into but for now, it's clear. No glitches for those who have good systems and good conditioned games.