Not really a biggie but I've noticed on my new iMac that when I login to my user account the desktop screen momentarily appears and then the screen instantly goes into sleep mode. All it takes is a nudge of the mouse / key press to bring it out of sleep mode and all is as it should be. Checked all the relevant settings and they're where I would want them - the only think I can think of is perhaps it's one of my Login Applications is causing this behavior. One thing I'll investigate when I get home is my new acquisition of a Wacom Bamboo tablet which does launch an application on login. As I said, in the grand scheme of things it's not particularly worrying however if anyone else has got any thoughts it would be appreciated.