At last, an explanation of the Bush Administration's misbehavior that will resonate in Silicon Valley: It's all Microsoft's fault. Ars Technica details how switching from an IBM Lotus email system installed under Clinton to a Microsoft Exchange server made it impossible to store White House emails systematically. The archiving system was operated manually, and Bush appointees nixed efforts to upgrade it. CIO Theresa Payton says that the White House is now working on a new system, but knowing the ways of both Washington and enterprise software, what are the chances it will be done before we have a new president?