My 24" iMac is due to arrive tomorrow. I am slightly worried that there may some some dead pixels etc.. and want to know if I can simply bring it to my local Apple dealer to replace OR do I have to send it back to Apple using UPS? I bought directly from apple.com and have been waiting 2 weeks for it to come from China. I couldnt deal with another 2 week wait for a replacement!! Will a local Apple dealer accept a faulty unit and replace it even if that delaer did not sell it to me in the first place?