I keep seeing stuff on different blogs like MMABlips, Bloody Elbow, and Cagepotato about the Josh Koscheck Paulo Thiago stoppage due to knockout.  Evidently Koscheck is upset that the Ref, Steve Mazzagatti, stopped the fight because he was not knocked out, and he wanted the time to prove that he could have gotten back in control of himself.  Cagepotato has the best article about this: The Only Rule You’ll Ever Need to Determine Whether a Fight Was Stopped Too Early.

It’s hard to find good video about this fight (I suspect because the UFC holds the video close to the vest), but there is a small snippet on cagepotato showing the knockout.  I have to admit that when Koscheck goes down it looks like he is getting ready to stave off an attack, but when Mazzagatti stops the fight, and pulls on his arm, Koscheck does look like he is in la la land.   I am going to have to agree with cagepotato that Koscheck was out when Mazzagatti stopped the fight.  Have a look at the snippet on cagepotato here.

You can see Koschecks response to the stoppage here.