I get it in my FN2 if I haven't had it up and down the rev range a few times before trying it, and I'm talking after the car is properly warmed up. It's like the box needs to get a good flow of oil round it then it'll change properly all day long.
I've noticed that today on my FN2 (sorry for hijacking thread!) but i thought it was me being unfamiliar with the car (had it for 3 days!) should I be worried?