Once or twice I've had Aircrack-ng finish in the blink of an eye. As soon as I hit Return it just pops up Key Found!
And that's without talking about SpoonWEP
We all know this. It is the newbs that come and look at the easiest thing to do in the haxor/pentest arena and think maybe I can make it faster or better.
But the reality of it is as we all know or should know that it is a waste of time.
As for spoonwep I don't think it actually increases the time that much comparatively speaking.
But it does serve a useful purpose.