Asa Dotzler from Mozilla gave his thoughts on Linux. He says Linux is simple not ready yet for the desktop as it still has four big issues for regular people: migration, stability, simplicity and comfort.
I think of Linux today the way I think of Mozilla 1.0 from just a few years ago: a very capable product with a very limited audience. If Linux makes major inroads on the desktop, it will probably be as a result of the same kind of focus that put Firefox on tens of millions of desktops, a focus on migration, stability, simplicity, and comfort.
You can read Asa's full article on Linux over here.