The DVD Player 5.0 software in Mac OS 10.5.1 is freezing when most of my burned movie DVD's are inserted. Some work fine but most launch DVD player and then the screen goes black, then slowly fades to white, then coloured. The movie doesn't play and it doesn't respond when I attempt to force quit. It's working fine running the DVD's on 10.3 with an older version of DVD player. Has anyone else encountered this and are you aware of any patches to fix it?