im with zombie on this one i though this would only affect apps running on metro while you can still run the normal system in explorer or whatever its called now.. Although im confused as to why they wouldnt make it run within there own virtual machine for testing. Im still a bit unclear but im asuming metro is the front end or the bread and butter of windows 8 but that you could run the normal windows box we are used to im just not sure if there is performance issues doing this or if its similar to what mac or unix does with it windows environment mode. Hopefully i will get a chance to play around i have seen a few articles but no true performance tests.