No, mine "blinks" instead. (The screen flashes black for a fraction of a second; can be the whole screen, or just part of it. It always starts at the top of the screen, but sometimes it doesn't work all the way down the the bottom.) It's totally random -- does it on battery and mains power, when fully charged or charging, can do it within the first 5 minutes of being switched on (from off) during the day or it can do it after several hours, and as I haven't put my MBP under a high load I don't think it's related to how heavily I'm using it. Sometimes it'll only blink once over 7 or 8 hours, other times it'll be several times an hour. I've had the LCD panel replaced (didn't fix it)... next stop will be to replace the logic board if the technician can see it happening for himself.