I have an Aspire One in my arsenal as well - unfortunately, my attempts to record with my E-MU 0404 USB all end up with clicks and pops, no matter what I do. It's still a neat little machine, but if you're planning to record with it, make sure that it will work with whatever interface you're using. If I could be sure that a UA-25EX, Fast Track Pro, or other interface would do a better job, I'd consider getting it.
Note that my laptop troubles have also occurred with other machines as well (a ThinkPad T30, and a Dell Inspiron with a Core 2 Duo), so it isn't lack of CPU power that has bedeviled my laptop recording efforts...