Myself and a few other users have noticed on our iphone 3g's, if push is on, roughly 15 minutes after you use the power button to put the screen to sleep these very, very, feint lines appear on the screen vertically, like the screen is glitching out. It can only be seen in a well lit environment and only last for a few minutes...

Some think it may be affecting the battery. Can anyone else test this? Did anyone else notice this? And does anyone have any info about it?

I don't wanna go through the whole exchange replace process if it is just how it is, or not truly a hardware defect...

I hesitate to think its defective, because everything else is fine, and it seems to only happen with push on...

Thanks.