So I was playing the single player on normal difficulty and at the point where your squad member gets sniped. At that point I walk over to where the enemies are spawning and no one is shooting!I stood there for a very very long time and took my time picking everyone off without moving an inch. Not a very good impression so far EA

I haven't played the game yet, but based on Bad Company 2 and all the footage I've seen of the BF3 singleplayer, Yeah, you're pretty much spot on. 
 
Their AI design is atrocious.. You guys should skip the SP, it's just there for show.

Sounds like a bug. I don't know why you didn't just restart from a checkpoint which could fix it instead of standing there for ages shooting stationary enemies.

I've run into a couple of bugs in the SP so far, but I love it because of the spectacle. : )

SP was pretty bad.

I haven't had any bugs in the campaign so far, but I'm not too far in.

The most interesting bug i found so far was when i used an obvious and unwalled path in the environment to flank in a firefight and ended up circling the enemy and turning a simple firefight into an unending enemy closet spawnfest. I had enemies spawning right in-front of me behind a pillar that i had seen behind and know was clear. It was very cartoon like. Anyways after 20 mins or so an enemy spawned right behind me and instakilled me with a knife... this was all in campaign mode by the way.