I just did some quick temp checks whilst in-game.
CPU 60-65 degrees (max 69)
GPU 87 degrees (max 87)
Those seem fine to me? Maybe the GPU is a little warm but how do I make that better other than after-market cooling which to be honest the card shouldn't need? It's not that old.
I also get a 'BF3 is not responding' just as I launch the game so maybe heat isn't an issue at that point.
I'm going to try IE or Chrome next.
Will report back later on but you will probably notice something is wrong when I leave game/TS or you hear my fist destroying my keyboard.
