This just started happening today.
I have an xbox 360 and my PC connected to this monitor. VGA and component.
When I turned my monitor on it sat on the "Gateway" screen for 30 seconds.. and then when the PC finally came on the screen, the Gateway symbol and words were still there for 10 seconds.
I had already opened up google and came here, began posting this, and the VGA box was still in the middle of my screen.
What the hell.