(Actually with a few small changes they would break a lot less. But that would have cost about $10 more a miner, can't have that....)
KNC have repeatedly demonstrated that they are tight assed tossers.
Memories

How come knc didn't put 6 connectors on all controller boards? It would take the pick and place a matter of seconds and the components only cost pennies. Because knc are cheap bastards.
How come knc shipped $7000 rigs in pathetic single walled cardboard boxes at the beginning of October (until we screamed at them so much they got better ones)? Because knc are cheap bastards.
How come knc switched from UPS to fedex in October? Because they wanted to blame the shipping company for any damage to the rigs (de-ja-vu anyone??), damage which they could claim they are not responsible for. Because knc are cheap bastards.
How come knc shipped *used* boards (this definitely happened) to customers who RMA'd *faulty* boards? Can you imagine someone shipping you used boards to replace faulty boards?! Because knc are cheap bastards.
Why did KNC not fix all rigs that had die0 boards immediately last year, now that we know it would have cost them very little? Because knc are cheap bastards, who don't give a damn about their customers - only about getting their greedy hands on customers money.
Why did KNC force so many customers over the last year to return faulty goods at the customers own expense, breaking their own T&C's? And ask them to commit fraud by writing down the cost of the rig etc to some nominal value? Because knc are cheap bastards.
How come knc shipped the Frankenjups in a cheap, plain box which doesn't even indicate which side is UP?! And blame UPS for mishandling it?! Because knc are cheap bastards.
Why did knc switch to a coolermaster heatsink for the frankenjup, which does not have a metal plate to bolt it down like the more expensive arctic i30? Because knc are cheap bastards.
We'll miss you kfc - not.