HP has a few new offerings in the 10" category . . . and the linux version is cheaper. it comes with HP Mi, which is built on an Ubuntu base but is customized for a smaller netbook screen. so far, the reviews seem to like it.

http://www.engadget.com/2009/05/26/hp-unveils-mini-1101-mini-110-xp-mi-editions-with-optional-hd/