There is a site that tracks all the video game and console sales, the VGChartz. Well, according to them, the Nintendo DS has officially become the best selling console of all time with 153.69 million sales, surpassing the former champion, the PlayStation 2. Considering that the Nintendo DS was released four years later than the PS2, this is an achievement unlocked. Doing good Nintendo, doing good. It seems to me that Sony is losing a lot of ground, specially in Japan.
UPDATE: It seems that VGChartz made a mistake and the DS has not surpassed the PS2, will keep you updated.