actually i was doing my homework and suddenly xcode dead because of interface builder..after I FC xcode and i saw the interface builcer cocoa touch tool fullload my cpu..i was on osx10.8.2 and xcode 4.5.2 but I just try to reinstall xocde to 4.5.1 but still didnt help..and here is the error report..please help! the log too long to i put it into a txt file: https://dl.dropbox.com/u/19082738/xcodeErr.txt