From the Bitcoin blocks (<30000) the difficulty was still unchanged, so it seems that very few people were mining Bitcoins with their CPUs, probably less than 5 people?
I wonder who the first 10 people ever to own bitcoin were.
1 must be satoshi, 2 must be Hal Finney.. not sure about the rest??
Satoshi, Hal, and |)ruid were there at the
beginning. It is thought there were at least
another 9 (unknown) users as far as we know, up until block 1000.