lseltzer writes "Adobe has threatened an antitrust suit against Microsoft, over PDF writing in Office 2007. Adobe wants Microsoft to separate the feature and charge extra for it. Microsoft has agreed to remove PDF writing, but won't charge extra." From the eWeek article: "In February, Adobe Chief Executive Bruce Chizen told Reuters he considered Microsoft to be the company's biggest concern. 'The competitor I worry about most is Microsoft,' Chizen said at the time. Adobe's PDF technology lets producers create and distribute documents digitally that retain designs, pictures and formatting. "