Well my display is pixel perfect and I haven't had any problems with the iMac except with USB connections. I have a LaCie 1tb Hard Drive that works perfectly on my MacBook (10.6.2, unibody) However, when I plug it into my iMac you can see some really tiny sparks when you are plugging it (and other powered USB devices) in. Originally it would work for about 15 minutes and then it would come up with the warning to not unplug the drive without ejecting it properly first. It would eject itself and then come back online a second later. Now when I plug it in, I can see in Disk Utility it see's the USB device, but it doesn't mount the volume and the drive disappears from Disk Util shortly after. So now I can only use it on my MacBook (which works flawlessly). Any ideas? Should I return the otherwise perfect machine or is there something I am doing wrong? Thanks so much!