I just recently upgraded (clean install) to Mountain Lion and have come across one issue. On Lion I had a password setup for initial login when the system turns on for example. However, after that, when the system went to sleep and I came back to the computer I did not need to login. With Mountain Lion I now have to login each time the system come back on from sleep mode. I have been searching for a couple days and haven't been able to find a solution. Anyone out there know?