Originally Posted by kenyee 
yep, I mean the double check...there was supposedly a menu option added to disable this in the K20D.
p.s., in bright light, I think it focuses a little faster than my K10D (the double check distance it spins is less).
I think that was from speculation before it was actually available to the public and people figured one menu option (catch-in focus) meant something other than it did.