I was helping my dad set up his new 27" iMac this weekend, and we hit a problem. The software updates would start to download, and then have an error message. Also, other downloads intermittently would and wouldn't work. Those would download but not unzip, saying the file was corrupt. Then others would download with no problem. I spent over an hour chatting with Apple support, and could not get this resolved. I ended up having to record my error with some software, which was then going to get sent to an engineer. So I'm hoping they figure it out. Otherwise, I guess it will need to be exchanged? Just curious, anyone else experience this?