Summary: I have had this very pricey laptop since Christmas, 2010. It has been in the repair shop (Sony's) for a week now. It wouldn't boot up at all and the call center told me to take it to the Sony store. Pretty lousy performance for the price.
Summary: I really like it. I knew what I was getting--a very lightweight laptop that is not too speedy but I did not intend to replace my home desktop computer. I wanted something to use when I travel. No problems surfing the internet, no problems with regular programs like a word processor, no problems with sorting digital pictures or some simple editing of the pictures, etc. I have no plans to use any high powered programs--not intended for that.
Summary: Only 1.6LBs with 11.1" screen. The display is very vivid. The keyboard is very usable. It has build-in Verizon WWAN and GPS. The hard drive is a little bit small but you can always get the 128GB version. For a normal user, 64GB is ok unless you do lots of video. Windows 7 was a little bit slow on this machine. So I turned off quite a few unnecessary services and it became much more speedy. Just google and get the list of services which could be disabled.
Summary: This is a remarkably light computer--it weighs just 1.6 pounds (not the 10+ that Amazon lists). I bought it to replace a 2.2 lb JVC from Japan that I have been happily using since 2003. It is very thin, but has a fairly large footprint for the light weight (about 7.5 X 11 inches). Battery life is good. The downside is that Sony has not thought out how human beings use computers.