Philips DVP 632 apect ratio

Hi all,

I have a DivX movie with a size of 640x352 pixel.
The movie plays fine on PC but on the Philips the aspect ratio is not correct (extremely visible). When I resize the movie downto 576x240 everything is fine. It seems that when horizontal size is higher than about 600 aspect ratio becomes bad.

Anybody with the same experience or an answer (limits ?)

Thanks in advance