No to minimize the problem but the proximity detector issue isn't a "big deal" because it's a software issue. It can be fixed with a software update. It's a pain in the ass, to be sure, but it's not going to cost Apple billions in repairs and reputation. This in contrast to the antenna problem which can't be fixed without at least replacing the metal band around the phone, the more likely scenerio being a complete phone replacement. That causes a lot more pain for the consumer and Apple than a software issue such as the prox detector or some math formula used to display reception bars universally acknowledged to be of dubious value at best.
The proximity sensor is a bigger issue for me than dropped calls. I did have a dropped call last night, which was the first one I've had that I didn't purposely create.
But with the proximity, I've had a lot of issues with dialing numbers, hanging up on calls, muting calls, putting calls on speakerphone... pretty much any option that can be done while on a call I have done.
Don't get me wrong, I love my new phone. I just upgraded from a 3G, and the pro's definitely outweigh the con's.
But these couple of issues need to be fixed soon. Whether it's with software updates (which is an unlikely fix in my opinion) or a recall with updated hardware.