I got the latest Kubuntu 64-bit (13.10) on my Toshiba Netbook NB305 (Atom N455, 250gig HD, 2gig mem) in place of Win 7 Starter. Kubuntu is opensource and free. The device is a bit slow still but faster than Win 7. (An Atom processor is more about battery life than speed after all.) I run FF, Thunderbird, and Chrome. Keeping the number of open tabs on the browser to 10 or less seems to help wrt responsiveness. FaceBook is a CPU hog, btw. With Kubuntu, you get a lifetime of free updates, tons of software (games, utilities, help forums, new Kubuntu version upgrades, programming languages, etc.) I got a big HP desktop (eight years old) running 64-bit Kubuntu (athlon cpu, 500gigs, 4gig mem) and it is a still pretty fast, no complaints.