I suggest you taking a look he

http://groups.google.com/group/rec.p...33c930cc16f7/#

My Sony still camera went "berzerk" and I started trying to figure out
what could have happened and found that several camera types (still and
camcorders) from different manufacturers use a Sony CCD that has a
manufacturing problem and is causing a lot of trouble, even a class
action law suit.

There are a couple links that explain which cameras and what to do.