Guys... My new iMac i5 (Mid 2010) is dead... after only 3 days using it... I was watching a movie in quicktime and suddenly all screen was messed up (lots of artifacts and coloful pixels all around)... Then I've restarted the computer and now only shows vertical bars... I've made a video http://www.youtube.com/watch?v=vBMJsZGkOAM It looks definitely a hardware problem (I would say a graphics card) anybody knows anyone else having the same problem? Tomorrow first thing in the morning I'll be going back to the store and returning it. I hope to get all my money back (2.000 Euros).