Hello. i have this quick blue screen (less than 1 second, it still progresses though) during startup after updating my OS X Lion to version 10.7.4. is this normal? anything wrong with my mac system? i never saw any blue screen before i updated the OS X. or is it actually caused by the application that i recently installed? i think i started to notice the blue screen after installing The Sims 3. but i'm not really sure. i'm using macbook pro 15" anyways, and it's new. thank you.