AMD was allowed by a U.S. district court to ask 30 companies to keep documents and emails that might be useful in its antitrust suit against Intel. A handful of them, including Acer, Best Buy, Gateway, Circuit City and Sony have agreed to comply. Toshiba, on the other hand, refused to talk to AMD’s lawyers. Prominent executives, such as Michael Dell and ex-HP Carly Fiorina, were also asked to retain documents, but as of now have yet to give an answer.