I got one from element14 last month as well. I read somewhere the the new latest ones were made in UK? But mine still has a sticker of "Made in China" on it.
Anyway, the board is a bit picky on the power supply. You will need a 5V one that can supply at least 1A of current and make sure the voltage at the board is within the acceptable range. Otherwise you will run into all kinds of weird problems (like keyboards not responding or repeating key strokes, intermittent network issues or stuck on boot, etc.) Also the IO pin out had changed for the latest board which is a bit confusing as well.