Well that lasted long! Got my 17" C2D yesterday after waiting nearly a month for it and it's just died after I spent nearly all day setting it up. Here's the problem: When the battery is installed and you press the power button, it comes on for a split second and then dies. If you remove the battery it starts fine but produces errors in the standard and extended hardware test. The error code is: "4SNS/1/40000000: TBOT" Will be phoning Apple tomorrow to get a replacement.