So, I had my replacement iMac arrive, which was worse than the first Week 48 I had. I have another replacement set up, but right now I don't trust Apple to deliver a working machine. So, I popped an email to Steve Jobs & Executive Relations (first time I have ever done this). I guess the question for you guys is this: do I just keep returning, or do I call it a day and ask for a refund? If I do the latter, do I replace with another Mac of some kind?