Hi all, i have a problem with my MAC PRO that seems to be getting a little worse. I get the dreaded black box "You need to retort your computer" when I attempt the following: Lengthy Video Conversion Exporting of multiple images from Lightroom (200+) I am also getting a strange problem now where the spinning ball comes in whilst using UTorrent. I have upgraded uTorrent to the latest version and that didn't help. I have done a little research and it may well be down to my Memory? I looked at the diagnostic and noticed my Riser A Dimm2 has an error. Have I laid out my memory in the correct manner? how do Isolve this problem? Thanks again for your help.