Recently got a Sony DVPNS405 Player which i thought was region locked. When i got it home I though "what the hell" and tried a Region 1 disk "Jackass - Vol2" and it worked fine. Excellent, I thought, it must be region free. I then thought I'd try another Region1 disk - "Moulin Rouge", but the player then said it couldn't play that disk as it was Region 1. Why would one region 1 disk work and the other wouldn't???