Redmond's upcoming Surface slate is brimming with potential -- but Microsoft recognizes that building its own tablet comes with some inherent risks. In the firm's recently submitted annual report, Microsoft tells the Security and Exchange Commission that the new family of slates could loosen ties with some of its partners. "Our surface devices will compete with products made by our OEM partners," the report reads, "which may affect their commitment to our platform." This, of course, echos
