Graphics card starting to die. Does your MBP have an 8600?
WHAT?????!!! i got my macbook pro on may 2010 it's one of those intel i5 2.4 Ghz 15'' !! btw i restarted my mac and it back to its health ! but i'm afraid it will get back again :S
Technology isn't perfect and has glitches from time to time. If you rebooted and it went away... I wouldn't worry about it.
If it comes BACK... bring it to a Apple Genius.
Have you installed all updates for it? Including the graphics update ?
WHAT?????!!! i got my macbook pro on may 2010 it's one of those intel i5 2.4 Ghz 15'' !! btw i restarted my mac and it back to its health ! but i'm afraid it will get back again :S
That happens to mine, but all over the screen. New i5 15". Other people are having this problem as well. YouTube and other videos started not working as well for an hour at a time (twice now) and then start working again. I don't know what is going in but I will take it in soon. Keep an eye on that!