I have not seen any cheating. I have seen lots of people saying someone was cheating when they were just mad cause someone killed them even though they hit the other guy too. etc.

"how could a german get across the street and into the 2nd story of a house that fast!!" Well when you are a german and you spawn way up by the road you can do that. I have.

"How can someone get that many kills and not get killed?" Well some guys are great about bobbing and weaving and aiming at your head.

I have never seen anything that looked like real cracked program cheating. Though I myself have suspected that this "aimbot" really exists. But then sometimes I get lucky when I am running with a smg from far away too.

Oh yes and if you are not in the realism model and you empty your thompson into someone's butt they wont die, you have to get a head or neck shot in (if they were 100% when you shot them)