HI, I had similar problem with mine. I bought mine back in August. 1 month later with 2 dif lens I was having focusing problems. Since it was new I went back to where I bought the camera and they looked at it, since they know what to do. Well ended up on mine there was a malfunction of the focusing comunicating from the lens to the camera!!! So they gave me a brand new one and havent had problems with it since. I have had this camera since september 2006. If you are still experiencing the problem I would take it back to where you got it from orig. They either will help you understand the camera or either replace it. It may be a simple thing or complex but the best thing is to go back where you bought it if it is a repeat problem!!

Marcie