http://mybroadband.co.za/news/Software/6624.htmlMicrosoft still has one significant Windoze hurdle to overcome, and that Linux is not burdened with - every pre-installed OEM Windoze release adds a significant cost to the purchase price, whereas Linux is free to install.
Given the choice between a netbook with Linux pre-installed and a lower pricetag compared to a netbook with Windoze installed and a higher pricetag, I expect consumers would be more inclined to buy the one with the lower pricetag - especially in the case of a netbook - it's not meant to be a fully-fledged notebook or desktop PC - it is intended for online connectivity.