I have an MBA 1.6/80 which is silent when the fan is 2500. Unfortunately when I do anything that has CPU load above 15% for 30 seconds - 1 minute the fans spin up to 6200 and then stays there for a long time (5 minutes say) before it tries to slow down again (even if the CPU temp is 50-55 again. If I sleep and open again immediately it will usually slow down immediately to 2500. Doesn't matter what I run (videos, Parallels, whatever) if its above 15% or so the fan speeds up. What I see on the boards are obviously the people who have this problem. What I would like is for all of you that DON'T have this please report in. I'd like to know that there are hundreds of you with OK fan behavior. Then I would know that mine is defective and I would get another. BUT if there is no one out there who doesn't have this issue than why bother to try to return; it's a design issue. I have definitely seen a couple posts where people do exchanges and end up just where they are in the beginning. Let's hear from all of you WITHOUT fan issues.