A couple of flaws I've noticed with the bumper. The silent switch is a little too far in and it's hard to reach unless you have small fingers/nails. I've heard reports that the 3G switch was easy to change in your pocket but I've never had any problems with the switch on my 3GS. The power button felt weak at first but now it clicks nicely like the volume buttons. Also a huge flaw is that headphone jacks dont fit in the headphone socket because the case is too thick at the top and the hole around the socket is too small. Did they even test the cases?! Anyone else found any other problems?