Just got White iPhone 3G last night, everything looks great so fare except for one thing. No bubbles, cracks, misalignes bezels, etc. The one thing I noticed that did not use to happen on my iPod Touch is this: When I press the lock button to turn off the screen, it goes black (like it should), but then a line sort of flashes across the middle of the screen and then disappears. It kind of looks like those really old TV's that popped the image into the middle then flashed a greyish circle in the middle of the screen when you turn it off. Just wondering if anyone else has noticed this and whether it is anything to be concerned about? Thanks.