There are of course many factors when it comes to mobility, but battery life tends to be the Achilles heel for most devices. Today for the second time I left the NC10 unplugged inadvertently at my desk. I did not use it that much directly (more in ambient third screen mode) and only discovered it was unplugged at the end of the day when I went under my desk to pull the cord. Yesterday I actually did the same thing, but realized when the system refused to update the BIOS without a DC connection.
Now on the train home I see I’ve got about 35% or about 1:16 left to run at this current brightness (3 of 8) and activity (Firefox, Tweetdeck, Windows Live Writer and iTunes) level. I only woke the system from sleep once after an extended away period in a meeting which is killer considering any other laptop I’ve used would absolutely have been dead by lunch.