There wasn't a single catalyst that led to the agreement; it was more a case of Intel and OLPC "coming to a collective realization that we'd be better working together than working apart," said Walter Bender, OLPC president, software and content.  And I'm sure that one of those "no single reasons" was AMDs strong support of OLPC giving them the inside track on making the chips for 100M laptops in '08-'09