The Acer Aspire One mini-laptop uses a Taiwanese Linux distribution called Linpus Linux (http://www.linpus.com is often down, check wikipedia for some info). The UI, though customized, is based on Xfce. For a little bit of an introduction to the device, have a look at Jasper's blog post.
Notes to the Xfce developers:
xfdesktop2 –version
on the Aspire One indicates that it is based off of xfdesktop.If the sources for these modifications cannot be found, then this sounds like a GPL violation.
Notes to the kernel or alsa developers: