4th fastest..
No that impressive considering it's much cheaper than the Wii, PS3 and PSP when launched..
Also unimpressive considering most of those are pre-orders built up over the last couple of months..
To me it looks like a major flop, as I don't know a single person thats even heard of the DSi, let alone itching to buy one for incremental upgrade features...
This just sounds like Nintendo paid for backpatting from ChartTrak...