ok so some will know i started the hard drive noise thread and ended up returning so many times. After going the online route and opting for the 2TB (which has been alot better) i have now suffered with screen flickering etc. After receiving my new replacement 2 days ago week 00 or 02 i immediately noticed horrible background bleed and a very strange white orb at the top right corner.... So after 9!!!! different 27" macs i have now called it a day. I am getting my money back and afraid to say back to windows until i can see a REV B come through with all the problems solved