Hello everyone, I just read the article about the MBP 2011 graphical problem, and after reading the comments on the forums and after having joined the MBP2011 Facebook group, I noticed a lot of users were having issues with their mid-2010 MBP too. It has been almost a year I am getting those graphical problems with my 15" MBP mid-2010, which Apple recognized as a default (see here). So, I got my logic board replaced in last January 2014 for free (fortunately) by Apple. Everything worked fine for about 2 months. After 2 months, the same problem appeared : artefacts while using the Nvidia video card. I went to the Genius Bar again, but this time they couldn't recognize the problem, so they just reinstalled the operating system. I am sorry Apple but holding my MBP for about 2 weeks for only reinstalling the OS, that's crazy. Now, as of 22 August 2014, I still get those artefacts with my MBP while using the discrete card (Nvidia). I (without purpose) captured the problem while I was making a screencast for my blog: --> http://www.anthonydamota.me/blog/en/use-countly-with-swift/ The video is at the end of the article. You can notice the artefacts at 00:05 ; 00:18 ; 02:05 and 02:11. Thank you for reading this, and I hope Apple will recognize for both 2010 and 2011 15" MBP the problem we are all facing.