Are the bummers out yet? I am wondering if you have bumper on if it solves this issue. It seems like it is shorting out when you touch two bottom parts of phone.
Edit:
I put a piece of paper in my hand and the issue seems to stop.
The bumpers are not an acceptable solution to me because then it doesn't fit in any of the docks. The Apple dock and Apple iPhone 4 universal dock adapters will not fit with the bumper on. I still don't understand why Apple doesn't make docks that work with their own cases. It irritates me that I cannot dock my iPad in the standard iPad dock with the Apple case on.