Yesterday I had an appointment with a "genius" at the Mapple store regarding a crack in my iPhone 3G case. This is my 3rd iPhone replacement due to the same issue so I wanted to get Mapple's take on it. At first the "genius" said, "Well, the official Apple stance is that it's due to pressure...of cases, being in people's pockets...stuff like that. I replied with, "Ya, but it's a phone, how else are you supposed to carry it, and I have had other mobile phones before which have been fine in my pocket. The cracks are also forming around the switches, which indicates to me that this isn't due to pressure, but because the case isn't designed well." He kinda stumbled a bit and then said....."Ok, well I have the same problem too..." He pulled out his phone and sure enough it had cracks starting by the silent switch. I said, "Do you think that's due to pressure?" He quickly avoided my questions and looked at my phone and said, "See, you have the Zagg on there, that's not a Mapple approved case!" I said, "Do you really think it's this case that's causing cracks...since the cracks aren't where the case is, and this has happened to two other previous phones all without cases?" He said, "Well...right now Mapple is replacing all cracked phones until we are told otherwise. I can replace yours today if you want." I told him that I wasn't going to do that until I heard some word on whether they were changing anything in the process or materials, but wanted him to make note of it so if things changed there was record I was here. He said, "Well, what I am doing is coming in two days before my warranty runs out and exchanging mine...since there is a 90 day warranty on all replacements" This actually surprised me a bit. I was under the impression that when your warranty is done, then you're S.O.L. It would seem that if this is indeed true, you could keep exchanging them (as long as they kept cracking) within the 90 days until the end of time (or your contract at least). Take this story how you will (we all know every Mapple store has a different story), but at least for now you should be able to get them replaced if there is an issue. I am personally waiting until they figure something out, but will be exchanging it on the last day of my warranty as the "genius" suggested.