My Droid X had the same problem. I took it to the VZW store and they said they had a few people come in for buzzing earpieces. When they took it back to look at it they blasted it with compressed air. Three days later my calls are crystal clear on max volume. Hopefully this means they aren't blown out speakers because they are blasting them with air at the actual VZW stores. Who knows. I just don't wanna send away for a new one and it have they same problem. I've spent so much time customizing that I just hope it's not broken hardware.