I use linux everyday!! for business and a little pleasure.
But AW and Linux is a bad idea.
Linux is not nearly ready to be a consumer level Windows replacement.
Ive been a daily user for 4 years, not just email reading either but real nuts and bolts stuff, and still the odd kernel update will bork my whole installl and Ill spend all weekend w/ google reading obscure logs and code trying to figure out a fix.
Some of their IT business customers could use this, but its prolly such a small percentage of total sales the maintenance and support would be a nighmare for AW.