has anyone else noticed that their iphone 3g has cracked?? today i noticed a crack in my 3g, which i have had for about a year. all its life it has worn a case. so i have no clew how it happened.. i wanted to sell it to get a s... i guess thats not going to happen now.. has anyone else had this problem with their 3g? what about the 3gs? here is a photo of the crack, its a bit hard to see but with the built in webcam. if you have had this problem, please post your photos as well. thanks.