Hi All, First I want to note that I did use the search function and manually searched the first few pages of threads and could not find anything on this topic, so I apologize if there is one but I did not find it. Anyway, I purchased a base MBP Retina prior to Mountain Lion and it worked fine, no issues whatsoever. It all started after I upgraded to ML and after I logged in, my screen would turn black and my MBP would basically freeze on a random basis, with the only way to remedy being to hard reset. I've called Apple tech support a number of times and I've tried all of their suggestions and none have worked. There is a workaround for it which is basically disabling auto login, however this is only a temporary solution. There is also a long thread about it on the Apple support forums here: https://discussions.apple.com/thread/4143957?start=225&tstart=0 So the reason I'm posting is because every Apple rep I've spoken with has told me that my issue is the first they've heard of it and more or less insinuated that the problem is quite isolated. The thing is, I don't know if I believe them and kind of get the feeling they're trying to downplay the issue and so was hoping to see if other fellow MBP retina owners could chime in. here to see if you're being affected by this issue as well? So, MBP Retina owners who have updated to ML with Login enabled, have you been affected by a random black screen after logging in?