Motorola i580

Ok, I thought this thing was the greatest thing in the world but now I'm on my 4th one. Every now and then I get a digitized distortion on my end that forces me to hang up. Immediatly after I hang up, it's fine. I can't figure out what makes it happen, but most of the time when it does happen, it starts immediatly into the phone call. Has anyone else had this problem?

The last one I had the camera also went bad on, but the sound seems to be a model issue...