2408WFP Incorrect aspect ratio on the video inputs

In the goal to help Dell to resolve some issues of the 2408WFP Monitor and to enhance it in a next revision, here is some problems i've found.

It's impossible to get a correct aspect ratio in full screen on the video inputs (S-Video or Composite).

Here are two examples:
First the 16:9 video is displayed in 16:10 as you can see on this picture.
Second the 4:3 video cannot be zoomed in full screen with a correct aspect as explain on this picture.

And also there is a bad synchro in the S-video input: Whatever the video source is NTSC or PAL the picture switch in black in white often.