I heard rumors that magnetic clasps sometimes caused problems with first gen iPhones, so when I got my 3G I got a velcro case. Since then, my daughter has used it as a step to climb up onto my head, so the clip on it is pretty much gone. In preparation for the iPhone 4, I got a new case.. this one has a magnetic clasp. However, now I'm wondering if the clasp will interfere with the phone... any idea if it will or not?