Congrats! The aspire one is one svelte machine, I picked up a 160/XP/Blue model a few weeks ago and absolutely adore it. The problem I found with running ubuntu on it is that gnome absolutely doesn't work right at all on a screen with a height of 600.

As long as you run XP, this utility is pretty mandatory - http://nodadev.wordpress.com/pc-projects/a1ctl/