Sensor Messed Up?

Nearly every phone call I make, the phone will mute itself, go into speaker mode, attempt to FaceTime with someone, etc. I also will sometimes put it between my cheek and shoulder if I'm multitasking or drving, but I was able to do that on my 2G with no problems. I'm just getting really tired of this. I've gone to the AT&T Store and they didn't help me at all. I went to the Apple Store and they told me that Apple is aware of this issue and is working on an update. I bought the iPhone for a PHONE. That's it's sole purpose and it doesn't even do that. I'm thinking about going back to AT&T and getting a BlackBerry or something. I love the iPhone 4, but I need a phone that won't drop a call twice in a conversation.

Anyone else having these issues and is Apple really coming out with an update that will fix this?

 

Okay thank you so much! I'm happy to know it's not just me that has this problem. Also is there any release date for 4.1 or anything yet?