PC World - The iPhone scored quite a few headlines related to overheating problems with the 3GS this week. Depending on whom you believe, those issues are either real, exaggerated, the fault of users or some combination of the three. Otherwise, as warm weather takes hold above the equator and Bostonians contemplate whether it's time to brush up on our ark-building skills (rain, rain go away), we find this week's IT news offerings cover a broad range.