I recently received and returned a yellow tinted/gray bar iMac and I was wondering what the turnaround time for getting a replacement is. I sent it back on Monday and according to the person I spoke with at Apple, as soon as Fedex scanned in the returned computer, they would send me the replacement. As of this morning there hasn't even been an acknowledgment on my order page of me sending back the computer. Also, my iMac is BTO and I was wondering if once they acknowledge I sent it back, do they THEN start building a new one? Unfortunately, I'll then likely have to wait at least a week to receive my replacement. I'm hoping that as soon as they realize I sent the returned computer back, they would be able to ship out a new one ASAP.