the amount of aggro you have on you, coupled with the difficulty of the mobs has a large impact on when you fall to the ground.
there is still a "random" failure chance that was added to make it seem less specific, but the truth of the matter is that you programmatically have a higher chance to fall to the ground on an FD when you have a lot of aggro on you that can kill you.
i tested this by adding a voice trigger to the "fallen" sound. outside of the random times when it fails (not in combat type failures), the only time i heard it was when i had a massive train of darkblue+ on me. while it doesn't always fail, your chances programatically skyrocket.
if you add your own voice trigger to it, you will see just how accurate my statements are. the problem is, "fallen" should be random. it in now way is. that is not what i call balance. these programmers are f*cking idiots.
Edited, Feb 2nd 2008 1:40pm by TooCrooked