I was unable to find a solution to this problem anywhere else, so here it goes: When I close the lid on my 2011 MBP 15" with Lion it goes to sleep normally. In the first couple of weeks with my MBP it would wake up normally from sleep. But now it gives me these screens when i open the lid: Ignore the date, these are not my pictures. This is naturally very annoying. I recently upgraded from 4 GB of RAM to 8 GB of RAM (fully compatible). I ran the built-in complete-RAM-check tool in boot-up, and everything was fine. I worked fine for some time after that, but now it gives me the two screens you see above. I have bootcamp as well if that matters. I don't know if I somehow changed some settings, but I don't think so. If you know of a solution I will be very happy. Thank you /autoaim, Denmark.