Well I have been using my iPhone4 since release day, I have had no problems at all, I find the reception to be fantastic, I get a much better signal than on my 3gs, I did some tests yesterday holding the phone on that seam and I did see a little loss in signal, but it didn't effect the quality of the call, also I just don't hold the phone in a way that covers that seam and all is well, I find the voice quality to be better and I still get a buzz just holding it, it really is a beautiful thing, I am baffled by all of this?
I have traveled around the Southwest (bad signal area's) in the UK and also all around London and I am totally happy with the phone, I don't use any case at all and its been a joy to use, I understand there may be a genuine issue and I admit that this is a bit of a design flaw but I really think its been pumped up to ridiculous levels.
I do hope for the unhappy people that Apple find a way to fix it, but honestly if they can't then for me it would make no difference at all, and those that just cannot hold the phone without pressing hard in that area (I can't imagine why anyone would find this hard) then just get a case or bumper, and if this is not acceptable then take the phone back to Apple and get something else, there is absolutely no justification for all the attacking, so Apple made a mistake, give them a break, if it Wasn't for them we wouldn't even have these devices, its Apple thats making everyone else lift the game and have to use some imagination, I am sure Apple will learn from all this and only good will come from that.