I have had an ongoing problem with my iMac. I have dealt with an Applecare senior advisor over the phone, taken it in to the service center, had an onsite visit and finally took it in to the Apple store. Because the issue has not been resolved the guy at the Apple store told me today that they were going to replace the computer. I asked if they would be replacing it with a new or refurbished computer and he assured me that they didn't have refurbished items in the store and it would be new. This led me to wonder later if it will be the same model iMac or the newer one. I believe there has been an update since I purchased mine. Has anyone had experience with this?