Nerfing the MAV is one thing I really wish they addressed in this patch. I'm not sure it's truly overpowered, but I'd venture that it's being used in a way other than what was intended.
Also, I managed to pick up a kit with the USAS-12 with frag rounds (I'm still a few levels away from this combo). While incredibly fun, I can't imagine that it won't be toned down next patch. If not, it's only a matter of time you see everyone rolling around with that combo.
I'm also surprised that this patch fixed all my technical issues. I'm finally running the game with both Crossfire and Eyefinity enabled

. The only issue I had setting it up was when I had bevel correction on, the mouse was visually to the right of where the game was registering it was (so your rounds would end up to the left of the cross-hair). Disabling bevel correction in the ATI utility fixed that.