I've seen a couple of folks over at Ubi make this complaint, and I have to agree with them. The AI is a bit screwy now. It seems like all you need to do is to scratch your enemy's paint to send him spiralling into the ground.
None of my tracks save correctly either now. Just a minor issue I'll admit, but...well...
I like to playback what I've done.
Yesterday I decided to throw on PF+FB+AEP for a little airshow and shoot 'em up, when I discovered...a big Jesus crack in my game disc!
But it's ok, 'coz I immediately ran out and found another copy for only twenty bucks. Crisis averted.