I've had the same problem with two DCS-5635 cameras. They just start going wild all on their own and then eventually become stable...sometimes it takes days for that to happen. Then they may work fine for a few days and then you may click to go to a preset or move right, ect....and they go crazy like you said rotating in all directions. I contacted customer support, gave them control of my cameras and they got the same results. They, informed me the cameras must be defective and I should return them to where I bought them. I believe they have an unresolved issue here....your not crazy, the cameras are.