My iphone4 has this problem or at least I can replicate it. Now whilst I normally use a case and its not a problem, the niggling fact at the back of my mind is that I have an expensive, faulty product that looks like being resolved by 30 Sept on new builds of that same product.
So if after 30 Sept, all the new phones have a hardware fix, will we be able to return for a replacement anyway under standard consumer law for our respective countries given that any hardware fix is really an acknowledgement of fault ?
As for the low number of people reporting the issue, I think its more a case of so many people seeing the media coverage and deciding to wait and see what Apple do. They may now find that the numbers of people returning iPhones, even for a just a replacement one, will increase dramatically.