I briefly mentioned this in another thread, but wanted to see if anyone has had this issue before and had it resolved successfully... My MacBook Pro (specs below) has a very irritating habit of flashing to black very quickly. It seems to often be just a bar along the top of the display, but sometimes it's the entire top half of the display, and sometimes the whole display. Each flash never lasts long - not even a full second. But I will often get several flashes in a row. The problem is very intermittent - I can go days without experiencing the problem and then I will get plenty of instances of the flashing within an hour. Oftentimes, restarting the computer will resolve the problem for a short while. I took my notebook to the Fifth Avenue Apple Store last month, while on vacation, but was unable to reproduce the problem and, for some reason, didn't even think to look up YouTube videos of other people experiencing the issue. To give you a better idea of what I'm talking about, here are three YouTube videos showing the problem. I've looked through the comments on the videos, but it seems to me like they never come to a specific conclusion. http://www.youtube.com/watch?v=SNQofnQKrDA http://www.youtube.com/watch?v=Zxcnwi_mxK8 http://www.youtube.com/watch?v=xJMuYneBLLE My MacBook Pro is a late 2008 model, 15" glossy display, 2.66 GHz Core 2 Duo processor, 8 GB memory, 500 GB HDD. All software and firmware up to date. Any ideas?