I just wanted to know if this problem is common with my camera. Lately I have been experiencing slow focusing on my camera. It would focus a subject and then go out of focus, camera would just go in and out of focus several times and then when it seems like it's in focus, camera won't even shoot. It's like my shutter is locked or something. Camera seems to be confused. This would go on for several minutes and then work flawlessly. I tried changing batteries and CF cards and it would do the same thing. Maybe my sensors needs to be cleaned? Any ideas suggestions? I haven't tried resetting my camera to default, I am going to try that tonight. I will take my camera to a repair shop but I just thought I'd post this here to see if somebody had any similar experience.