I purchased this light on08/28/08 at Lowes. The light comes on when it feels like it in the middle of the night. I changed the photocell and it wirked okay for a few nights and is now back to working intermitantly. What are my options to replacing it. I understand it is now an obsolete item. Lowes said to check with you first and they will issue me a credit if you can't help me. Ralph Calabrese