I had one about 7 years ago and I changed it for an atom 330. The c7 is very under powered even for windows xp. Your better off getting an atom, and bobcat or better yet, wait for Jaguar.
Yeah, they are pretty bad. Bought a 1.6ghz one to use as a monowall router and the processor choked bad with anything more than basic routing operations. Ended up being a major dissapointment overall.