I've just downloaded the Seanonkey 1.1.8 nonews, nomail dotpet from the packages 4 ibiblio repo and installed it over the full version of 1.1.2 running under Pupeee on the Classmate PC
Highly recommended - it flies. You could use Sylpheed as the mail client also from packages 4. It also flies on the Classmate.
Seamonkey 1.1.8 on Classmate PC
Seamonkey 1.1.8 on Classmate PC
Life is too short to spend it in front of a computer