After a continuing feud between Intel Corp and the One Laptop Per Child organization, Intel finally walked out with a huff.

OLPC has been trying hard to get cheap computers into the world's poorest countries. But in order to keep the price down, these have AMD chips instead of the higher-priced Intel processors, and use open source operating systems rather than the also pricier Windows.

Intel joined the organization a while back, seeing that it was a huge market opportunity. But they used their insider knowledge to get their own Wintel machines into the running for the purchase orders, at almost twice the cost. Then they put their biggest sales reps into the field to make sure that they got all the orders. 

OLPC cried foul. Intel responded by leaving the organization (presumably taking their support money with them).