Hitting buttons on screen while talking

This is ridiculous. In the middle of almost every conversation i either hang up, mute, facetime, or add calls. I have had this happen at least 150 times now. I've NEVER had this happen on any of the other iphones and i've had several of each version. going to return it today

Do like jobs says...

http://www.blogcdn.com/www.engadget.com/media/2010/06/10x0625obv1241hold.jpg

Same problem here, my calls last just a few seconds before I start clicking speaker, facetime, hold or end call. This should be a software issue that shall be resolved on the following update. Hopefully Apple has acknowledged this is a problem and his handling it.

I also have the same issue and I've tried this out on my wife's phone too. If Apple doesn't fix this, I will return the phone!

This is a real concern. I used to throw on the bluetooth and lock the phones screen. With iOS4 there is no way to lock the screen and therefore we're all having this same issues.

I dont know why they would have changed what the sleep/wake button does duriong a call because it worked so well on the previous offerings. Hopefully, they fix it...and soon. Its a great device..but cant be called a great phone.

All of you are probably having the same problems that are being discussed in this thread http://discussions.apple.com/thread.jspa?threadID=2475509&tstart=15

It involved the proximity sensor when the phone is held up to your ear. You should not be activating any buttons by accident.