Yep, felt awful. Although I only hit it 50% of the time as I couldn't get the line through there right.
Myself and @Nelson did the National circuit a couple of months ago and the bumps there were a right bitch, if my memory serves me well @royalwithcream had a little off in the same place due to the transition between the two tracks.
I found that corner a right bitch to get the correct line every lap, not sure why, really struggled with it.
I am no expert but the bumps are right on the best/racing line, I as did a few of the other guys took a avoiding wider line as to miss the bumps as it really unsettled the bike when on lean,I personally love the national track as luffield is one of my favourite corners and you get to go round it 20 times a session , shreds the rhs of your tyre after a day tho.
I came off just before the bumps. More down to my own fault as we were getting frustrated with the CSS instructors at the demo being so slow and got a bit stupid playing around! Those bumps are big though, the only place I ever experienced the rear pumping badly as it lost grip and wheel spinned over them.