The flicker is a pulsating, flickr - I could describe it, but this video on youtube explains it all, watch?v=20-NEgXUk5o - check out the one on the right.
I noticed it very strongly on the first startup - and then always with three bars from the brightest setting, most notable in Aperture.
I don't want to send the MBP back, but I don't want the flickering? What should I do?