Well call it lag or whatever you want but I am one of the people that got screwed during the last update. Pre 1.05 I was doing great, KD was going up, I went back to playing regular core on this COD since it seemed so easy to kill someone, I was having A LOT of fun and excitement! Post update I'm having a lot of the same problems listed in other posts but the main thing is how I now have to shoot someone TWICE as long and 90% of the gun battles I lose. After watching a few killcams where the enemy wasn't even in the same spot where I saw him I decided to do a test, I started using the throwing knife and I found that when enemies were moving even when I was dead on from 5 feet away the knife would miss. I had to start leading them with the knife and hope that is the way they are still going.
It's really getting on my nerves. I'm not one to threaten to never play a game again or say I'm switching (what good does that do anyway), but I will say that as of right now I feel a little cheated out of my money.