Put in nuts and turned to mush

It is extremely difficult to chop walnuts in a food processor, because they turn to powder within a few seconds. I have chopped them using both a Cuisinart food processor and a Moulinex La Machine. The difficulty arises because even after you have released the on or chop button, the blade continues to spin for a second or two. The Cuisinart DLC-8S is not particularly well-suited for chopping nuts, because the blade is not reversible - there are many Cuisinarts that do have reversible blades - a particularly good one is the Cuisinart DLC-2A, which has both a reversible blade and a Chop function (retails for about $29.99 to 39.99 nowadays).

The only way to have any success whatsoever with the DLC-8S is to press the pulse button and release immediately - only use a small amount of walntus - and then dump the bowl and add a few more at a time.