I am having logout problem when I do Photoshop, the screen suddenly goes into blue screen and then it will come into login screen, When I enter my password I can only see a fresh desktop its like restarted... I thought this may be an issue when turning auto switching to graphic mode.... but its the same when I turn off auto switching graphic mode. This happens several time when I am working.... so I cant do any design work continuesly. Does anyone know how to solv this problem ? MPB with i7 processor, 4GB. Software is up to date updated.