Apple just responded to the report claiming Mac Pros produced before 2008 can give off leukemia-causing benzene by stating through a spokesman spin-doctor to Macworld the following:
We have not found anything that supports this claim, but continue to investigate it for the customer.
While we would love to give Apple the green light on this, what company would openly admit that they products could literally kill you? Independent reports will no doubt populate quickly as the Mac Pros in question more than likely power the labs that test for these types of toxins anyway. How hard would it be for a lab rat to point his atmosphere sniffing thingie at the computer he works on all day. Don’t expect this story to go away any time soon.