They are able to get them that thin by using solid state memory rather than a hard drive. Think of you camera's memory stick on a large scale. The downside is that they can't put any optical drives in them so if you want a DVD / CD burner or any combo you have to buy an external one.
Go Mac! Just say no to all else. Big bucks, no problems! You choose! My Toshiba is about to be used as a clay pigeon! Brand new computer (2nd one). I returned the first one and this next one I waited too long. I am going into Best Buy and throwing it in the air then I am going to jump up and down on it!
go mac...after all the virus software and considering just about any pc will die within 2 years...they cost the same. I went through 3 pcs in one year...tossed them all:breakcomp:...got a mac and haven't had a problem since.