Hello there. I finally received my ML update code this morning and of course preceded to install the update on my laptop, everything went well and after it was done installing and I logged back in the first message I got was the software "Little Snitch" isn't compatible with ML so I thought cool I figured something wouldn't be compatible, I deleted the program off my app folder and went about business. I tried watching a youtube video on the developer version of Chrome and nothing would play, I stalled flashed again ant it worked fine, so I turned off the computer and left it alone, about half an hour ago I decided to use it again and I noticed that before the computer gets to the log screen it flickers, I wasn't surprised at this because I remember reading someone else had an issue similar to that, what caught by surprise is that after I input my password I just get a dark screen, I can tell the computer logs in because if I press something on the keyboard I can heard a sound, I restarted my computer several times and it kept doing the same thing. Then it occurred to me to try to log in with the guest account and to my surprise it worked just fine, then I tried logging in to my account by doing the user switch and and I was able to get to my stuff just fine, I restarted my computer again and I tried logging in directly to my account and it worked. But then after restarting the computer again and trying to log into my account I once again get the dark screen. And If I try the guest account it works just fine, this is weird I thought about staring the install from scratch but I really don't want to install my software all over again:/ I apologize for the long read I just wanted to be really clear about the issue, Any suggestions?