I waited till the new models came out some months ago to buy my iMac. My plan was to buy the 1TB model and either replace it with a 3TB drive myself or use a local Apple certified shop. I got the 2011 when they came out but the rest of this plan went on hold when I read that there were specific firmware issues with the hard drives that controlled the fan speed. I realize that you can just use a fan speed program after putting in a non compatible drive however I was curious if this issue has been resolved. Can I purchase a compatible 3TB drive or even a 2TB drive that will work without issue?