I'm concerned about the LHC? "Why?" you ask, "it's not going to destroy world." I know that, but that's not what I'm worried about. What concerns me is this photo I saw from the CERN control room. Do you see? Do you see? Their control room computers are running Windows! These people should be dab hands at using Linux and writing custom control software for it, so why have they chosen Microsoft?
But, on a more serious note well done to all the people that got the LHC up and running today. Let's hope it all carries on without any hiccups and we get the first collisions soon.