hey, i just got the new 15" mbp and noticed that safari top sites would scramble itself at times. i've looked around the net and seems like a normal occurrence for people with the new mbp's. my question is, what is causing it? and how do you get rid of it? is it just a matter of turning off "automatic graphic switching" so it's running on the discrete nvidia card? is it a software issue with flash or safari? or is it more serious? like a hardware problem? thanks in advance for any insights.