Ok,my camera was working perfectly well yesterday. Today it started to make a weird sound around the lens. They where going back and forth without stopping and didn't let me take pictures. I tried changing it's battery and memory but it still shows the same problem. Can someone tell me what to to about it? I don't want to smack the cam. by the way, it's a Sony cyber-shot 7.2 mpx.I need a good answer please???