I've just spent ten minutes with the Acer Aspire One, a Linux-powered subnotebook with these specs: 9" screen, 512MB RAM, 8GB flash storage, 1.6GHz Intel Atom CPU, three USB ports, 2 SD card slots and an Ethernet port. It's running Linpus Linux 9.4 Lite -- based on Fedora -- with an Xfce desktop for added snappiness.
Following Asus's lead with the Eee, the Aspire One's interface features big, colourful buttons on the desktop to launch the included software, most of which is geared towards internet and office jobs (Firefox, OpenOffice.org etc.) Physically, the machine feels robust and well constructed, with a small but usable keyboard and a trackpad that has mouse buttons on each side, which takes some getting used to.
Is it an Eee PC killer? I'm in no rush to ditch my Eee, but Asus certainly has some competition on its hands, especially with the Aspire One's £230-ish price tag. Also, Asus really needs to trim down the range of Eee models on offer -- just look at this buyer-bewildering pile-on.