I hate this machine. I can watch a youtube video or a normal video for as long as I want when I have the computer on a desk. But when I put it on my lap, even if I try to do my best to not having anything blocking my vents it just starts to sound like a hoover vacuum and run choppy. Its either a big piece of crappy engineering or really bad testing before it was launched. Steve is eating his own words for bragging during its presentation of how good it was at keeping low cpu temps and stuff. I rather have a machine that burns my legs but runs a F* youtube video properly. Even the iphone can do it (and I dont care if it has different encoding). And its not even that thin! It is just its design to make it seem to the eye like it is super thin. Plus who the F* cares if the machine weights 1kg or 2kg (like a macbook)? And good for office stuff??... well... office s**s on Mac... Excel makes no sense, you cant use any of the shortcuts. $3000 thrown to the F* trash! Thanks Steve I hope you use that money to clean up our ass after ******** on some CrapBook airs! I never had core shutdowns. But I put it on my lap... and yes... just discovered the way to make it happen. And what is the point on Steve bragging how this machine runs at 1.8ghz whereas other machines only at 1.25ghz... when actually it doesnt deliver what is promised and goes down to 1.2 or even 800!!!!!!!!! Who is with me? and got this thing on Feb 2008 and has felt like he wanted to throw it out of the window like a frisbee since then? PS: The worst thing is that it runs choppy and stuff when istat actually says the temp is 60C and the fan is at 6200.... WTFFFFFFF??? ... such a useless machine. I remember as soon as I bought it it went up to 80C and never had a core shutdown, and the fan never started sounding until then.. really bad OS updates have made it into such a useless machine instead of fixing the very few problems that mine had.. ¬¬ Edit: And I forgot to mention something... I have had this problem since the beginning, and that is: I cannot ichat with someone for more than 5 minutes before this machine starts to sound like a hoover vacuum and run so slow that I need to close it for it to cool down... it doesnt matter if its on my desk or my lap .... what a rip off Steve!!!