It's been a while sine I replaced my Thinkpad with the excellent DELL M90. You can read about that transition here .The DELL rocks, but it has a drawback that the Thinkpad didn't have. It's too big to move around the house. I'm a tech book junkie and spend quite some time reading tech books. Tech books also tend to be like bricks and they are not very comfortable to shlep around with you, let alone a few. Ever tried to take with you Petzold and Prosise for more than a few meters? Well, it's been...