Just writing to say that my RaspberryPi from Farnell and the one from RS Component have arrived yesterday.
I'm playing with them a little, doing some experiments, and actually they seems quite good, expecially for the price. The official Debian GN/Linux distro runs fast and without troubles. Actually, I'm trying to prepare a Kubuntu version for the RaspberryPi, but it will take some time, I think, to make it work smoothly.
If you want to give a look at them, you will find all the pictures in my gallery: