I've noticed an issue occurring with my Mac, which at first I was unsure was there, or was my imagination. Sometimes for a split second the screen will flash- I can't tell exactly what it is, but it seems to be white from what I noticed. It is for a split second, and at first I was unsure if it was even happening and it was in my mind. It only happens maybe once or twice a day. I honestly can't remember if this happened on my old Mac. Is this anything to worry about, or is it simply something to do with the OS refreshing the display and outputting plain white for a split second? It's so fast, it is very hard to notice, and like I said I thought it could have been my eyes. I just don't want it to be a possible big issue. Thanks, Conan.