the last 3 or so weeks that I played MP, it was to the point where it wasn't even fun. There were dudes shooting me through walls / finding me etc. Just to make sure I wasn't crazy, at the start of a match I went and hid in a out of the way building; after about 4 minutes; boom, I'm dead. Dude running down the street apparently "saw" me and shot me through a wall.
I also think there was something going on with aiming. there were dudes that were getting like 60 kills in a 250 ticket game.
Life is 99% inspiration, 1% Perspiration, and 1% Attention to Detial.