I recently had the same problem with a Bold I had earlier. A friend of mine mentioned that speaker connection isn't as secure and would eventually loosen due to regular handling. I called AT&T to get it replaced and they made me go through a trouble shooting process and update the OS, which I already knew wouldn't solve the problem. I received a refurbished one and sent mine back to them in exchange. But, I'm still a bit wary of the connection. When I press to the left or to the right of the camera lens while music is playing I can hear a volume change. I haven't gotten the chance to try the quick fixes above, but I will keep those in mind when or if the volume begins to fade.