What are you guys talking about? The DS has not been slowing down at all... http://vgchartz.com/hwlaunch.php?cons1=DS®1=Japan&cons2=DS®2=America&cons3=DS®3=All&weeks=178&weekly=1
Or look at it this way... DS had a big difference between launhes, but let us start at Japan release date, because then more than half of the gaming world was in.
First half year:
Total 4,906,678
Second half year:
Total 4,623,475
Third half year:
Total 12,113,939
Fourth half year:
Total 9,289,128
fifth half year:
Total 16,656,488
Sixth half year:
Total 12,483,330
That is NOT going much down lately, rather the opposite.
Those numbers give the intention that last year it dropped, but they didn't
http://vgchartz.com/hwcomps.php?cons1=DS®1=All&cons2=DS®2=All&cons3=DS®3=All&start=39103&end=39467
They did have a small drop in Japan though, USA is steady and Total Other increasing.
http://vgchartz.com/hwcomps.php?cons1=DS®1=All&cons2=DS®2=All&cons3=DS®3=All&start=39103&end=39467
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







