Thanks for your responses Joe and Jim. I agree with Jim that it's just more noticable now than ever. Maybe this was overlooked in the past years. I was looking at past events and at Indy 1994 and Sonoma 1991 where in FC only one pair cars made a decent race out of 15, but I don't remember anyone on NHRA's case about track prep back then.
Joe I agree too, probably not much you can do at high track temps. On the other hand, why is track prep an issue in 2008 with all the technology that is out there?
Jim